For complete list of the races in all districts, but without commentary, see United States House of Representatives elections, 2010 - complete list.

The 2010 United States House of Representatives elections will be held on November 2, 2010, halfway through President Barack Obama's first term in office. Elections will be held for all 435 seats, representing the 50 U.S. states. Elections also will be held for the delegates from the District of Columbia and four of the five U.S. territories. The only seat in the United States House of Representatives not up for election is that of the Resident Commissioner of Puerto Rico, who serves a four-year term and will next face election in 2012.

The number of House seats may change pending the passage of the District of Columbia House Voting Rights Act of 2009 ( and ) in the House. On February 26, 2009, the United States Senate passed S. 160 by a vote of 61-37, although an attached amendment removing most of the District's gun laws has kept the bill from proceeding further.

The winners of this election cycle will serve in the 112th Congress.

Background

Following the 2006 elections, Democrats took control of the House as well as the Senate. In the 2008 elections, which coincided with Democrat Barack Obama's victory over Republican John McCain for the presidency, Democrats increased their majorities in both chambers. Of the 435 Congressional districts, 242 were carried by Obama, while 193 voted for McCain. Of the districts Obama won, 34 elected a Republican to the House, while 49 of the districts McCain won elected a Democrat.

Republicans are hoping to win back many of the swing districts they lost in the two previous elections. Both parties have been preparing to defend seats that they risk losing. Democrats, who occupy more of the swing districts, are operating more on the defense than are Republicans. The Democratic Congressional Campaign Committee has highlighted 40 Democratic incumbents at risk, part of their "Frontline Program." The National Republican Congressional Committee has in turn highlighted 10 Republican incumbents at risk, part of their "Patriot Program." They later added 15 additional names to the list, bringing the total to 25.

Recently, both parties have been tied or had small leads in polls of voters on generic congressional ballots.

This will be the last congressional election using congressional districts that were drawn based on the 2000 census.

Retiring incumbents

At this point in time, 19 U.S. Representatives are voluntarily retiring from the House at the end of their current term.

Democratic incumbents

• : Artur Davis: To run for governor of Alabama.
• : Kendrick Meek: To run for the U.S. Senate.
• : Neil Abercrombie: To run for governor of Hawaii.
• : Dennis Moore: Retiring; "Time for a new generation of leadership."
• : Charlie Melancon: To run for the U.S. Senate.
• : Paul Hodes: To run for the U.S. Senate.
• : Joe Sestak: To run for the U.S. Senate.

Republican incumbents

• Delaware's At-large congressional district: Michael Castle: To run for U.S. Senate.
• : Adam Putnam: To run for Florida Commissioner of Agriculture.
• : Nathan Deal: To run for governor of Georgia.
• : Mark Kirk: To run for U.S. Senate.
• : Jerry Moran: To run for the U.S. Senate.
• : Todd Tiahrt: To run for the U.S. Senate.
• : Pete Hoekstra: To run for governor of Michigan.
• : Roy Blunt: To run for the U.S. Senate.
• : Mary Fallin: To run for governor of Oklahoma.
• : Jim Gerlach: To run for governor of Pennsylvania.
• : Gresham Barrett: To run for governor of South Carolina.
• : Zach Wamp: To run for governor of Tennessee.

Predictions

Most non-partisan pundits predict that the Republicans will gain seats in the 2010 elections, but expressed doubt that the Republicans could retake control of the House in 2010. In April 2009, Stuart Rothenberg wrote on his blog, the Rothenberg Political Report, that "... the chance of Republicans winning control of either chamber in the 2010 midterm elections is zero. Not 'close to zero.' Not 'slight' or 'small.' Zero." In the same column, Rothenberg wrote "It’s not yet clear which party will gain seats in next year’s midterms or how large the swing will be. The GOP could well gain back some ground, given how far its House numbers have fallen." However, by late September 2009, Rothenberg change his predictions, writing that the "national political landscape has changed noticeably over the past few months, with Republicans the beneficiaries" and that "Democratic control of the House is not now at risk." In a May 2009 column for his Crystal Ball newsletter, Larry Sabato wrote "History instead suggests that the overall odds favor Republican gains in the House in 2010, but relatively modest gains. After all, Democrats now hold 257 House seats, 39 seats more than the minimum needed to control the House. Only Truman in 1946 and Clinton in 1994 yielded more than 39 seats to the opposition party in their first midterm election." In an August 2009 column, Charlie Cook wrote that things had "slipped completely out of control" for the Democrats in 2010. He wrote that it was increasingly likely that the GOP could make big gains in 2010, but avoided any mention of the possibility that Republicans could regain control of the chamber. In an August prediction, Nate Silver wrote that the Democrats would suffer a loss of between 20 to 50 seats in the 2010 House elections. In another August prediction, Silver wrote "While the Democrats are not extraordinary likely to lose the House, such an outcome is certainly well within the realm of possibility (I'd put the chance at somewhere between 1-in-4 and 1-in-3)." In September 2009, an article titled "Generic House Polling Suggests the Republicans Could Regain the House in 2010" was published on Silver's blog, FiveThirtyEight.com.

Race ratings

The following table rates the competitiveness of selected races from around the country according to noted political analysts. Races not included are currently considered safe for the incumbent's party. (Incumbents not running for re-election have parentheses around their name.)

District	Incumbent	Cook	Rothenberg	CQ Politics	Crystal Ball
AL-2	Bright (D)	Tossup	Pure Tossup	Tossup	Tossup
AL-3	Rogers (R)	Solid R	Limited Risk	Likely R	Likely R
AL-5	Griffith (D)	Leans D	Leans D	Leans D	Leans D
AK-AL	Young (R)	Likely R	R Favored	Leans R	Likely R
AZ-1	Kirkpatrick (D)	Likely D	Limited Risk	D Favored	Likely D
AZ-5	Mitchell (D)	Likely D	D Favored	Leans D	Likely D
AZ-8	Giffords (D)	Safe D	Limited Risk	D Favored	Likely D
AR-1	Berry (D)	Likely D	Limited Risk	Safe D	Likely D
AR-2	Snyder (D)	Lean D	Limited Risk	Safe D	Likely D
CA-3	Lungren (R)	Leans R	Leans R	Leans R	Leans R
CA-4	McClintock (R)	Safe R	Limited Risk	R Favored	Likely R
CA-10	Garamendi (D)	Likely D	Safe D	Safe D	Safe D
CA-11	McNerney (D)	Lean D	Limited Risk	D Favored	Likely D
CA-18	Cardoza (D)	Likely D	Limited Risk	Safe D	Safe D
CA-44	Calvert (R)	Leans R	Leans R	Leans R	Leans R
CA-45	Bono Mack (R)	Likely R	R Favored	R Favored	Likely R
CA-47	Sanchez (D)	Likely D	Limited Risk	D Favored	Likely D
CA-48	Campbell (R)	Solid R	Limited Risk	Safe R	Likely R
CA-50	Bilbray (R)	Solid R	Limited Risk	R Favored	Likely R
CO-3	Salazar (D)	Likely D	Limited Risk	Safe D	Safe D
CO-4	Markey (D)	Tossup	Tossup/Tilts D	Tossup	Leans D
CT-2	Courtney (D)	Safe D	Limited Risk	D Favored	Safe D
CT-4	Himes (D)	Likely D	Limited Risk	Leans D	Likely D
CT-5	Murphy (D)	Safe D	Limited Risk	D Favored	Safe D
DE-AL	(Castle) (R)	Leans D	D Favored	Leans D	Leans R
FL-2	Boyd (D)	Likely D	Limited Risk	Safe D	Likely D
FL-8	Grayson (D)	Tossup	Pure Tossup	Tossup	Likely D
FL-10	Young (R)	Likely R	R Favored	R Favored	Likely R
FL-12	(Putnam) (R)	Likely R	Limited Risk	Likely R	Leans R
FL-13	Buchanan (R)	Solid R	Limited Risk	R Favored	Likely R
FL-16	Rooney (R)	Likely R	Limited Risk	R Favored	Likely R
FL-19	(Wexler) (D)	Safe D	Safe D	Safe D	Safe D
FL-22	Klein (D)	Likely D	Limited Risk	Safe D	Likely D
FL-24	Kosmas (D)	Leans D	Tossup/Tilts D	Leans D	Leans D
FL-25	Diaz-Balart (R)	Solid R	Limited Risk	R Favored	Likely R
GA-8	Marshall (D)	Likely D	D Favored	Leans D	Likely D
GA-12	Barrow (D)	Likely D	Limited Risk	Likely D	Likely D
HI-1	(Abercrombie) (D)	Likely D	D Favored	Likely D	Likely D
ID-1	Minnick (D)	Tossup	Pure Tossup	Tossup	Tossup
IL-6	Roskam (R)	Solid R	Limited Risk	Safe R	Safe R
IL-8	Bean (D)	Likely D	Limited Risk	Safe D	Likely D
IL-10	(Kirk) (R)	Tossup	Pure Tossup	Leans D	Tossup
IL-11	Halvorson (D)	Likely D	Limited Risk	D Favored	Likely D
IL-13	Biggert (R)	Likely R	Limited Risk	R Favored	Likely R
IL-14	Foster (D)	Leans D	Tossup/Tilts D	D Favored	Leans D
IN-2	Donnelly (D)	Likely D	Limited Risk	Likely D	Likely D
IN-3	Souder(R)	Safe R	Limited Risk	Safe R	Likely R
IN-8	Ellsworth(D)	Likely D	Safe D	Safe D	Safe D
IN-9	Hill (D)	Leans D	Limited Risk	D Favored	Likely D
IA-2	Loebsack (D)	Safe D	Limited Risk	Safe D	Likely D
IA-3	Boswell (D)	Likely D	Limited Risk	D Favored	Likely D
IA-4	Latham (R)	Solid R	Limited Risk	R Favored	Safe R
KS-2	Jenkins (R)	Safe R	Limited Risk	R Favored	Safe R
KS-3	Moore (D)	Tossup	Limited Risk	Tossup	Likely D
KS-4	(Tiahrt)(R)	Likely R	Limited Risk	Safe R	Likely R
LA-2	Cao (R)	Tossup	D Favored	D Favored	Leans D
LA-3	(Melancon) (D)	Leans R	Tossup/Tilts R	Leans R	Leans R
MD-1	Kratovil (D)	Tossup	Pure Tossup	Tossup	Tossup
MI-7	Schauer (D)	Leans D	Tossup/Tilts D	Leans D	Leans D
MI-9	Peters (D)	Likely D	Limited Risk	Leans D	Likely D
MI-11	McCotter (R)	Likely R	R Favored	Leans R	Leans R
MN-1	Walz (D)	Safe D	Limited Risk	D Favored	Likely D
MN-2	Kline (R)	Safe R	Limited Risk	R Favored	Safe R
MN-3	Paulsen (R)	Likely R	R Favored	Leans R	Likely R
MN-6	Bachmann (R)	Leans R	R Favored	Leans R	Leans R
MS-1	Childers (D)	Tossup	Pure Tossup	Leans D	Tossup
MO-4	Skelton (D)	Likely D	D Favored	D Favored	Likely D
MO-9	Luetkemeyer (R)	Solid R	Limited Risk	R Favored	Likely R
NE-2	Terry (R)	Leans R	R Favored	Leans R	Leans R
NV-2	Heller (R)	Solid R	Limited Risk	R Favored	Safe R
NV-3	Titus (D)	Leans D	Limited Risk	Leans D	Leans D
NH-1	Shea-Porter (D)	Leans D	Pure Tossup	Leans D	Tossup
NH-2	Hodes) (D)	Tossup	Pure Tossup	D Favored	Leans D
NJ-3	Adler (D)	Likely D	Limited Risk	Leans D	Likely D
NJ-7	Lance (R)	Solid R	Limited Risk	Leans R	Likely R
NM-1	Heinrich (D)	Likely D	Limited Risk	D Favored	Likely D
NM-2	Teague (D)	Tossup	Pure Tossup	Tossup	Tossup
NY-1	Bishop (D)	Leans D	Limited Risk	D Favored	Likely D
NY-3	King (R)	Safe R	Limited Risk	R Favored	Safe R
NY-13	McMahon (D)	Likely D	Limited Risk	D Favored	Likely D
NY-19	Hall (D)	Leans D	D Favored	Leans D	Leans D
NY-20	Murphy (D)	Likely D	D Favored	Leans D	Likely D
NY-23	Owens (D)	Leans D	Tossup	Leans D	Leans R
NY-24	Arcuri (D)	Leans D	Leans D	Leans D	Likely D
NY-25	Maffei (D)	Likely D	Limited Risk	D Favored	Likely D
NY-26	Lee (R)	Solid R	Limited Risk	R Favored	Safe R
NY-29	Massa (D)	Leans D	Leans D	Leans D	Tossup
NC-8	Kissell (D)	Leans D	D Favored	Leans D	Likely D
NC-11	Shuler (D)	Likely D	Limited Risk	Likely D	Likely D
OH-1	Driehaus (D)	Tossup	Pure Tossup	Leans D	Tossup
OH-2	Schmidt (R)	Leans R	R Favored	Leans R	Likely R
OH-12	Tiberi (R)	Leans R	R Favored	Likely R	Likely R
OH-15	Kilroy (D)	Tossup	Pure Tossup	Leans D	Tossup
OH-16	Boccieri (D)	Leans D	Limited Risk	D Favored	Leans D
OH-18	Space (D)	Leans D	D Favored	D Favored	Likely D
OR-4	DeFazio (D)	Likely D	Limited Risk	D Favored	Likely D
OR-5	Schrader (D)	Likely D	Limited Risk	D Favored	Likely D
PA-3	Dahlkemper (D)	Likely D	Limited Risk	Safe D	Likely D
PA-4	Altmire (D)	Likely D	Limited Risk	D Favored	Likely D
PA-6	(Gerlach) (R)	Tossup	Pure Tossup	Leans D	Tossup
PA-7	(Sestak) (D)	Tossup	Pure Tossup	D Favored	Tossup
PA-10	Carney (D)	Likely D	D Favored	D Favored	Likely D
PA-11	Kanjorski (D)	Likely D	Limited Risk	D Favored	Likely D
PA-12	Murtha (D)	Likely D	Limited Risk	D Favored	Likely D
PA-15	Dent (R)	Leans R	R Favored	R Favored	Leans R
SC-1	Brown (R)	Likely R	Limited Risk	Likely R	Likely R
SC-2	Wilson (R)	Likely R	Limited Risk	Likely R	Safe R
SC-5	Spratt (D)	Likely D	Limited Risk	Safe D	Safe D
SD-AL	Herseth Sandlin (D)	Likely D	Limited Risk	D Favored	Safe D
TN-3	(Wamp) (R)	Likely R	Limited Risk	Safe R	Likely R
TN-6	Gordon (D)	Likely D	Limited Risk	Safe D	Likely D
TX-10	McCaul (R)	Likely R	Limited Risk	R Favored	Likely R
TX-17	Edwards (D)	Leans D	D Favored	D Favored	Leans D
TX-23	Rodriguez (D)	Likely D	Limited Risk	D Favored	Likely D
VA-2	Nye (D)	Leans D	D Favored	Leans D	Leans D
VA-5	Perriello (D)	Tossup	Pure Tossup	Tossup	Tossup
VA-9	Boucher (D)	Likely D	Limited Risk	Safe D	Safe D
VA-10	Wolf (R)	Likely R	Limited Risk	Safe R	Safe R
VA-11	Connolly (D)	Likely D	Limited Risk	D Favored	Likely D
WA-3	Baird (D)	Likely D	Limited Risk	Safe D	Likely D
WA-8	Reichert (R)	Leans R	Tossup/Tilts R	Leans R	Leans R
WI-3	Kind (D)	Likely D	Limited Risk	Safe D	Likely D
WI-8	Kagen (D)	Leans D	Limited Risk	Leans D	Likely D

Races by state

See also: Swing District

Alabama

• : Freshman Democrat Bobby Bright, the former Mayor of Montgomery, defeated Republican state Representative Jay Love by fewer than 1,800 votes in 2008, helped by a bitter Republican primary. There has been speculation that Bright, who intends to run for reelection, would run as a Republican, but he has denied the rumors. Republican Montgomery City Councilwoman Martha Roby has announced she will challenge him. Other potential Republican candidates include maxillofacial surgeon Craig Schmidtke, who Love defeated in the Republican primary, businesswoman Patricia Barnes, state Representatives Greg Wren, Steve Clouse and David Grimes, and former State Treasurer George Wallace Jr., who ran for but narrowly lost the seat in 1992 as a Democrat. This southeastern Alabama district includes most of the city of Montgomery, as well as Troy and Dothan. John McCain won 63.42% of the vote here in 2008. (Cook Partisan Voting Index R+16).

• : Republican incumbent Mike D. Rogers defeated Democratic lawyer Josh Segall 53.4% to 46.6% in 2008, Rogers' closest victory since he was first elected. Segall has announced that he will run again. Calhoun County Commissioner Robert Downing is another possible Democratic candidate. This eastern Alabama district includes part of Montgomery, as well as Phenix City, Auburn, Sylacauga, Talladega, Anniston, and Piedmont. McCain won 56% here in 2008. (Cook Partisan Voting Index R+9).

• : Freshman Democrat Parker Griffith, who is being targeted for defeat by state and national Republicans, is facing a challenge from Navy veteran Lester Phillip, and Madison County Commissioner Morris Brooks. This northern Alabama district includes Huntsville, Scottsoro, Decatur, and Florence. McCain won 61% here in 2008. (Cook Partisan Voting Index R+12).

• : Democratic incumbent Artur Davis is running for Governor of Alabama. Six Democrats have announced their candidacies: attorney Terri Sewell, state Representatives Earl Hilliard, Jr., the son of the district's former congressman, Earl Hilliard, Jefferson County Commissioner Shelia Smoot, former Selma Mayor James Perkins, attorney Martha Bozeman, and Tuscaloosa small business owner Eddison Walters. Other Democrats considering a run include state Senators Bobby Singleton and Linda Coleman, and Hank Sanders, and state Representative Merika Coleman. The district, which includes the west central part of the state and includes Selma and Demopolis, as well as parts of the cities of Birmingham and Tuscaloosa, gave Barack Obama 71% of the vote in 2008. (Cook Partisan Voting Index D+18).

Alaska

• : Republican incumbent Don Young defeated Lieutenant Governor Sean Parnell by 304 votes in the 2008 Republican primary and former state House Minority Leader Ethan Berkowitz by five points in the general election. Young is running for reelection, but any opposing candidates may be aided by the fact that because of an ongoing federal investigation, Young has lost his status as ranking member on the House Natural Resources Committee. Before moving to the general election, Young will have to face off in a primary with businessman Andrew Halcro. Democratic State Representative Harry Crawford will run to unseat Young. Party strategists believe that Democrats have a chance here in 2008 because former Alaska Governor Sarah Palin will not be on the ballot as the Republican Vice Presidential nominee. The district includes the entire state of Alaska: McCain won 59% here in 2008. (Cook Partisan Voting Index R+13).

Arizona

• : Freshman Democrat Ann Kirkpatrick will face a challenge from former state Senator Rusty Bowers. The district includes northern and eastern Arizona including Flagstaff, Prescott, Payson, and some of the Navajo reservation. McCain won 54% here in 2008. (Cook Partisan Voting Index R+6).

• : In 2008, Democratic incumbent Harry Mitchell defeated his Republican opponent, former Maricopa County Treasurer David Schweikert, 53% to 44%. Schweikert has filed paperwork in order to run again, and will face businessman Jim Ward in the primary. Other potential Republican candidates include former state Representative Susan Bitter Smith who was defeated in the 2008 primary by Schweikert, as well as Tempe Mayor Hugh Hallman. The district, which includes Scottsdale, Tempe, Fountain Hills, Tortilla Flat, and small parts of Phoenix and Mesa, gave McCain 52% of the vote in 2008. (Cook Partisan Voting Index R+5).

• : Democratic incumbent Gabrielle Giffords is facing a challenge from Republicans Brian Miller, an A-10 Instructor Pilot in the Air Force Reserves; Jesse Kelly, a construction company executive and former Marine; and veteran Andy Goss. This southeastern Arizona district includes Cochise County and part of Tucson and its northern suburbs including Oro Valley, Cortaro, and Marana. McCain won 52% here in 2008. (Cook Partisan Voting Index R+4).

Arkansas

• : Democratic incumbent Vic Snyder is facing a challenge from Republican health insurance executive David Meeks, and Former US Attorney Timothy Griffin. This district, which consists of the center of state, including Little Rock, Jacksonville, Conway, and Morrilton, gave McCain 54% here in 2008. (Cook Partisan Voting Index R+5).

California

• : Republican incumbent Dan Lungren defeated his Democratic challenger 49% to 44%. Democrats running for this seat are physician Amerish Bera and Sacramento Municipal Utility District Director Bill Slaton Other potential Democratic candidates include Calaveras County Supervisor Steve Wilensky, Rancho Cordova City Councilman Ken Cooley, state Assemblywomen Allyson Huber, and former state Treasurer and 2006 gubernatorial nominee Phil Angelides. Libertarian Art Tuma is also running. The district includes the Sacramento County suburbs of Carmichael, Citrus Heights, Fair Oaks, and Elk Grove. In 2008, Obama narrowly won this district with 49.4% compared to 48.8% for McCain. (Cook Partisan Voting Index R+6).

• : Freshman Republican Tom McClintock defeated Democratic retired military officer Charlie Brown 50.2% to 49.8%. Brown, who was also defeated in 2006 46% to 49% against then-Republican incumbent John Doolittle, is considering running again. The district consists of northeastern California, including the cities of Roseville, Rocklin, and Auburn. McCain won 54% here in 2008. (Cook Partisan Voting Index R+10).

• : Democratic incumbent Jerry McNerney is facing a challenge from seven Republicans who will compete in a primary election to determine the general election candidate. The candidates are winegrape grower Brad Goehring, Values Advocacy Council President Larry Pegram, former US Marshal under George Bush Tony Amador, high school teacher Jeff Takada, former telecommunications executive David Bernal, businesswomen Elizabeth Emken, and construction company owner Robert Beadles. The district includes the inland East Bay suburbs of Danville, San Ramon, and Pleasanton, and the northern San Joaquin Valley. Obama won 54% here in 2008. (Cook Partisan Voting Index R+1).

• : Democratic incumbent Dennis Cardoza is facing a challenge from Turlock Irrigation District board member Mike Berryhill, a Republican. This Central Valley district includes Merced as well as part of Stockton and Modesto. Obama won 59% here in 2008. (Cook Partisan Voting Index D+4).

• : Republican incumbent David Dreier defeated Democratic businessman Russ Warner with 52% of the vote in 2008 and at the presidential level gave Obama 51%, a turnaround of eight percentage points from the 2004 election. Warner is running again. This district includes Arcadia, Monrovia, Covina, Glendora, Pomona, and Montclair, . (Cook Partisan Voting Index R+3).

• : Democratic incumbent Jane Harman has become embroiled in a controversy where she allegedly agreed to help two former American Israel Public Affairs Committee officials accused of espionage. Harman is facing a primary challenge from teacher and party activist Marcy Winograd, who challenged her in 2006 and won 38% of the vote. Blogger John Amato is also considering running in the Democratic primary. This coastal Los Angeles County district includes Manhattan Beach, Torrance, Redondo Beach, and parts of the city of Los Angeles, including San Pedro and Venice. Obama won 64% here in 2008. (Cook Partisan Voting Index D+12).

• : Republican incumbent Ken Calvert defeated Democratic challenger Bill Hedrick by a slim 51% to 49% margin in 2008, despite Hedrick's being heavily outspent. Hedrick has announced he will seek a rematch; Calvert has announced he will seek reelection and will face a primary challenge from real estate broker Chris Riggs. This district, which includes Riverside, Norco, and Corona, was close in 2008: Obama won 49.5% of the vote to McCain's 48.6%. (Cook Partisan Voting Index R+6).

• : Republican incumbent Mary Bono Mack is facing a challenge from Democratic Palm Springs Mayor Steve Pougnet. Former state Assemblywoman and 2008 Democratic nominee Julie Bornstein may run again: Bono Mack defeated Bornstein 58.3% to 41.7%. Considered vulnerable by national Republicans, Bono Mack has been enlisted in a program to receive financial support. The Steve Pougnet campaign is considered vulnerable until the Riverside County Grand Jury returns their findings regarding a battery case filed against him in 2007. The district includes the cities of Moreno Valley, Hemet, Palm Springs, Cathedral City, Rancho Mirage, and Indio. Obama won 52% here in 2008. (Cook Partisan Voting Index R+3).

• : Democratic incumbent Loretta Sanchez will run for reelection. Republican Assemblyman Van Tran and former marine pilot Quang Pham will run for the right to compete against Sanchez. The district includes the cities of Santa Ana, Garden Grove, and most of Anaheim. Obama won 60% here in 2008. (Cook Partisan Voting Index D+4).

• : Republican incumbent John B. T. Campbell III is facing a challenge from former Irvine Mayor and current city council member Beth Krom, who has announced she will run as a Democrat. The district is located in southern Orange County and includes the cities of Tustin, Irvine, Laguna Niguel, and Newport Beach. Obama defeated McCain 49.3% to 48.6% here in 2008. (Cook Partisan Voting Index R+6).

• : Republican incumbent Brian Bilbray is facing a challenge from three Democrats: attorney Tracy Emblem, former Cardiff School Board Trustee Francine Busby, and former Solana Beach Mayor Dave Roberts. Bilbray defeated Busby 53% to 43.5% in 2006. Bilbray is expected to be targeted for defeat by national Democrats. Former prosecutor and 2008 Democratic nominee Nick Leibham may run again; Bilbray defeated Leibham 50.2% to 45.2%. The district includes northern San Diego, Solana Beach, Encinitas, Escondido, San Marcos, and Carlsbad. Obama won 51% here in 2008. (Cook Partisan Voting Index R+3).

Colorado

• : Democratic incumbent John Salazar is facing a challenge from three Republicans: District Attorney Martin Beeson, state Representative Scott Tipton, and retired lawyer Bob McConnell. The district includes the Colorado Western Slope as well as Pueblo. McCain won 50% here in 2008. (Cook Partisan Voting Index R+5).

• : Democratic incumbent Betsy Markey is likely to face a spirited Republican challenge in 2010. On the Republican side, University of Colorado Regent Tom Lucero, State Representative Cory Gardner, and Fort Collins City Councilman Diggs Brown are running. State Senator Greg Brophy, former state Senate Majority Leader Mark Hillman, Weld County Commissioner Bill Jerke, and former state Senator and current Larimer County Commissioner Steve Johnson are potential Republican candidates. The district includes the cities of Fort Collins, Loveland, Greeley, Fort Morgan, and Lamar. McCain won 50% of the vote here in 2008. (Cook Partisan Voting Index R+6).

• : Democratic incumbent Ed Perlmutter has won two terms by surprisingly large margins, but Republicans claim that they can defeat him in 2010. Aurora City Councilman Ryan Frazier, who had been running for the U.S. Senate, is now a candidate for the U.S. House of Representatives [719681] and Republicans claim that he will be a formidible candidate.

Connecticut

• : Democratic incumbent Joe Courtney is facing a challenge from Republican Matthew Daly, a former board of finance member from Hebron, as well as corporate consultant Daria Novak. Other potential Republican candidates are former state Representative Andrew Norton and 2008 nominee Sean Sullivan (who Courtney defeated 66%-32%). This eastern Connecticut district includes Norwich, New London, and Storrs. Obama won 58% here in 2008. (Cook Partisan Voting Index D+6).

• : Freshman Democrat Jim Himes is facing a challenge from state Senator Dan Debicella, former state Senator Rob Russo, financial industry veteran Rob Merkle, political newcomer Will Gregory, and former mayoral candidate Rick Torres. This southwestern Connecticut seat includes Bridgeport, Fairfield, Westport, Norwalk, and Stamford. Obama won 60% here in 2008. (Cook Partisan Voting Index D+5).

• : Democratic incumbent Chris Murphy is facing a challenge from three Republicans: Justin Bernier, the former executive director of the state’s Office of Military Affairs, State Senator Sam Caligiuri, and businessman Mark Greenberg. The district consists of northwestern Connecticut and includes the cities of New Britain, Danbury, and most of Waterbury. Obama won 56% here in 2008. (Cook Partisan Voting Index D+2).

Delaware

• : Republican incumbent Mike Castle is retiring to run for the United States Senate. Democrat and former Lieutenant Governor John C. Carney, Jr. has announced his candidacy for this seat. Carney will be challenged in the Democratic primary by Scott Spencer, a transportation consultant. Businessman Fred Cullis has announced his candidacy as a Republican, saying he would be an "independent voice for Delaware." The district, which consists of the entire state of Delaware, gave Obama 62% of the vote in 2008. (Cook Partisan Voting Index D+7).

District of Columbia

Florida

• : Democratic incumbent Allen Boyd will face a primary challenge from state Senate Democratic Leader Al Lawson and also from Florida Whig Party candidate Paul C. McKain. Two Republicans will face off for their party's nomination: attorney Charles Ranson and businessman Steve Southerland. The district, which includes most of Tallahassee as well as Panama City, gave McCain 54% of the vote in 2008. (Cook Partisan Voting Index R+6).
• : Democrat Alan Grayson unseated incumbent Ric Keller in 2008 52% to 48%. Known for his tough questioning of people involved in the current financial crisis, Grayson has embarrassed himself in a ponzi scheme, where he reportedly lost millions of dollars. He has picked fights with his hometown newspaper, the Orlando Sentinel. Notorious for his comment about the Republican healthcare plans, Grayson has suggested they are about making sick people "die quickly", and called the inability to fix the American Healthcare System "the holocaust in America." While on MSNBC, Grayson referred to former Republican Vice President Dick Cheney to a "vampire" with "blood that drips from his teeth." He called a Federal Reserve senior advisor, "K Street Whore" and suggested citizens wanted "A congressman with guts." Republican former pilot Dan Fanelli, activist Patricia Sullivan, doctor Ken Miller, 2008 candidate Todd Long, and Entrepreneur Armando Gutierrez are running. Republicans are trying to recruit businessman Bruce O'Donoghue into this race. The candidates remaining are not the candidates the Republican Party has initially suggested they would like to see run. This central Florida district includes most of Orlando as well as the suburbs of Conway and Ocoee. Obama won 52% of vote here in 2008. (Cook Partisan Voting Index R+2).

• : Republican incumbent Bill Young is facing a challenge from Democratic state Senator Charlie Justice. Since Young raised a meager $4,500 in the third quarter of 2009, there is some speculation that he will retire. While Young has not decided whether to run again, he has stated he is not planning to retire. This district includes most of most of Pinellas County, including St. Petersburg, Pinellas Park, Seminole, and Largo. Obama won 52% here in 2008. (Cook Partisan Voting Index R+1).

• : Republican incumbent Adam Putnam is vacating this seat in order to run for Florida Commissioner of Agriculture. Republican former state Representative Dennis Ross is running for this seat, and will be joined in the primary by Polk County Commissioner Randy Wilkinson and banker Thomas Snyder. Other potential Republican candidates include Polk County State's Attorney Jerry Hill. On the Democratic side, Doug Tudor, a retired United States Navy chief, and Polk County Elections Supervisor Lori Edwards are running., and perhaps former state Senator Rick Dantzler, as well. This district includes most of Polk County and southeastern Hillsborough County. John McCain won 50% of the vote here in 2008. (Cook Partisan Voting Index R+6).

• : Republican incumbent Vern Buchanan has announced his reelection to his house seat. Democrats have heavily targeted this seat in 2006 and 2008, and may do so again. Democratic Reverend James Golden has announced his candidacy. This district includes Sarasota County and most of Manatee County: McCain won 52% of the vote here in 2008. (Cook Partisan Voting Index R+6).

• : Freshman Tom Rooney will face a challenge from St. Lucie County Commissioner Christopher Craft. This south central Florida district includes Jupiter, Port St. Lucie, and Fort Pierce, as well as parts of Port Charlotte and Wellington. McCain won 52% here in 2008. (Cook Partisan Voting Index R+5).

• : Democratic incumbent Kendrick Meek is running for the United States Senate. The announced Democratic candidates are Miami-Dade Public School Teacher Leroy Adam, state Representative Phillip Brutus, state Senator Frederica Wilson, Miami Gardens city Councilman Andre Williams, Miami Gardens Mayor Shirley Gibson state Representative Yolly Roberson, community activist Marleine Bastien, and attorney Roderick Vereen. Potential Democratic candidates include state Representitive James Bush and Opa-Locka Mayor Joseph Kelley. This district, which includes the north side of Miami as well as Opa-Locka, North Miami, Carol City, Miramar and the western portion of Hollywood, gave Barack Obama 87% of the vote in 2008. (Cook Partisan Voting Index D+34).

• : Democratic incumbent Ron Klein is running for reelection. Republican former military officer Allen West, who Klein defeated 55% to 45% in 2008, will run again. This coastal district, which includes most of Ft. Lauderdale along with Boca Raton, Coconut Creek, and Deerfield Park, gave Obama 52% of the vote in 2008. (Cook Partisan Voting Index D+1)

• : Freshman Democrat Suzanne Kosmas is facing a challenge from four Republicans so far: Anethesiologist Ken Miller, Winter Park City Commissioner Karen Diebel, and state Representative Sandy Adams. This east central Florida district includes Orlando suburbs of Winter Springs and Winter Park, as well as part of the Space Coast, including Port Orange, Edgewater, and Titusville . McCain won 51% here in 2008. (Cook Partisan Voting Index R+4).

• : Republican incumbent Mario Diaz-Balart had a difficult reelection in 2008, winning by 53% to 47% against Joe Garcia, a former chair of the Metro-Dade Democratic Party. Garcia may seek a rematch in 2010. This southwestern Florida district consists of Collier County, Monroe County, and western Miami Dade County, includes the communities of Cutler Ridge, Leisure City, and Homestead, as well as the Florida Everglades. McCain won 50% here in 2008. (Cook Partisan Voting Index R+5).

Georgia

• : Republican incumbent Nathan Deal is retiring to run for governor. On the Republican side, former state transportation board chairman Mike Evans, former state Senator Bill Stephens, state Senator Lee Hawkins, conservative activist Jeremy Jones, county district Commissioner Mike Cowan, and state Representative Tom Graves are running. Other potential Republican candidates include talk radio host Martha Zoller, state Representatives Tom Graves and James Mills, state Senators Chip Pearson, David Ralston, and Lee Hawkins, and former 12th district Congressman and teacher Max Burns. Gainesville resident Eugene Moon will be running as an independent. This Northern Georgian district includes Gainesville, La Fayette, and Dalton. This is the fourth most Republican district in the country: McCain won 75% in 2008. (Cook Partisan Voting Index R+28).

• : Republican incumbent Paul Broun may run for the United States Senate. This northeastern Georgia district includes Athens, Toccoa and part of Augusta. McCain won 62% here in 2008. (Cook Partisan Voting Index R+15).

• : While Democrat John Barrow was reelected by a margin of 66% to 34% in 2008, he faced a very close race in 2006, being reelected by a margin of less than 1%. Former Thunderbolt Councilman and current town fire chief Carl Smith, and Savannah Republican activist Jeanne Seaver have announced that they will challenge Barrow. Other potential Republican candidates include state Representatives Jon Burns and Bob Lane. The district, which includes Statesboro, Vidalia, and Milledgeville, as well as most of the cities of Augusta and Savannah, gave Obama 54% of the vote in 2008. (Cook Partisan Voting Index D+1).

Hawaii

• : Democratic incumbent Neil Abercrombie is vacating this seat in order to run for governor. Former second district Democratic Congressman Ed Case and state Senate President Colleen Hanabusa have announced their intention to run. Republican Honolulu City Councilman Charles Djou has announced his candidacy and has secured the backing of much of the state's Republican establishment, including governor Linda Lingle. This district is based on the island of Oahu and includes Honolulu, Waipahu, and Pearl City. Obama won 70% of the district's vote in 2008, though in 2004 Republican George W. Bush was able to win 47% of the vote, giving Republicans hope that they can win the district in 2010. (Cook Partisan Voting Index D+11).

Idaho

• : Democrat Walt Minnick unseated Republican Bill Sali by a margin of 51% to 49% in 2008. Iraq War veteran Vaughn Ward is running for the seat and has the endorsement of Arizona senator John McCain. Physicist Allan Salzberg and state Representative Raul Labrador will challenge Ward in the Republican primary. Sali is considering running again; other Republicans considering the race are state Senator John McGee, former state Controller Keith Johnson, and state Attorney General Lawrence Wasden The district, which includes the Panhandle, Moscow, Nampa, Caldwell, and part of Boise, gave McCain 62% of the vote in 2008. (Cook Partisan Voting Index R+18).

Illinois

• : Republican incumbent Mark Kirk is retiring to run for the United States Senate. On the Democratic side, 2006 and 2008 nominee Dan Seals, State Representative Julie Hamos, and Elliot Richardson have announced their intentions to run. Current Republican candidates include Mount Prospect mayoral hopeful Patricia Bird,, state Representative Beth Coulson, businessman Dick Green, attorney Bill Cadigan, and businessman Bob Dold are running for the Republican nomination. Other potential Republican candidates include businessman Bill Strong, state Representative Ed Sullivan, Lake County board member Ann Maine, Wilmette President Chris Canning, and state Senator Dan Duffy. The affluent district, which includes Chicago's northern and northwestern suburbs of Arlington Heights, Northbrook, Highland Park, North Chicago, and Waukegan, gave Obama 61% of the vote in 2008. (Cook Partisan Voting Index D+6)

• : Freshman Democrat Debbie Halvorson has drawn two Republican challengers so far: real estate investor Henry W. Meers Jr., and Iraq War veteran Adam Kinzinger. The district includes some of the exurbs south of Chicago including Joliet, Kankakee, and Ottawa, as well as part of Bloomington-Normal. Obama won 53% here in 2008. (Cook Partisan Voting Index R+1).

• : Republican incumbent Judy Biggert defeated Democratic businessman Scott Harper 54% to 44% in 2008, Biggert's smallest victory of her career. At the time of the 2010 election, Biggert will be 71 and intends to run and face Harper again. The district includes the southwest Chicago suburbs, including Naperville, Downers Grove, Westmont, Woodridge, and Bolingbrook. Obama won 54% here in 2008. (Cook Partisan Voting Index R+1).

• : Democratic incumbent Bill Foster won a 2008 special election to succeed Republican Dennis Hastert, the former Speaker of the House. Foster, who held the seat as an incumbent in 2008, is facing a challenge from attorney Ethan Hastert, Dennis Hastert's son, former Defense Department worker Mark Vargas, State Senator Randy Hultgren, former Aurora City Council member Bill Cross, and property maintenance manager Jeff Danklefsen. This north central Illinois district includes Aurora, Elgin, DeKalb, and Dixon. Obama won 55% here in 2008. (Cook Partisan Voting Index R+1).

Indiana

• : Democratic incumbent Joe Donnelly will face a challenge from state Representative Jackie Wolarski. This north central Indiana district includes South Bend, Mishawaka, LaPorte, Michigan City, Elkhart, and part of Kokomo. Obama won 54% here in 2008. (Cook Partisan Voting Index R+2).

• : Republican incumbent Dan Burton defeated former Marion County Coronor John McGoff in the Republican primary by 52% to 45% in 2008, leading some to consider him vulnerable to a primary challenge. As result, Burton is increasing his fundraising and announced he will run for reelection. Former Republican congressional candidate Brose McVey, state Republican Party executive director Luke Messer, State Representative Mike Murphy, and 2008 primary challenger John McGoff have all formally announced their intention to run. Marion County Prosecutor Carl Brizzi will run if Burton changes his mind and retires. The east-central Indiana district, which includes suburban Hamilton County and Hancock County, and part of Indianapolis itself, gave McCain 59% of the vote in 2008. (Cook Partisan Voting Index R+17).

• : Incumbent Democrat Baron Hill has won in this district since 1998, except for in 2004, when he lost to Republican Mike Sodrel by 1,425 votes. Hill narrowly regained his seat from Sordel in 2006 and won another race with Sodrel in 2008 by a wide margin. However, Sodrel hasn't ruled out another rematch; other potential Republican candidates include Floyd County Prosecutor Keith Henderson, Bloomington attorney Todd Young, and Republican National Committeewoman DeeDee Benkie. This southeastern Indiana district includes Bloomington and New Albany. McCain won 50% here in 2008. (Cook Partisan Voting Index R+6).

Iowa

• : Democratic incumbent Leonard L. Boswell will face a challenge from aviation consultant Dave Funk. Another possible Republican who may run is former state Republican Party chairman Michael Mahaffey. Boswell defeated Mahaffey for this seat in 1996, winning 49.3% to 47.6%. The district includes the central and east central portion of Iowa, including Des Moines. Obama won 54% here in 2008. (Cook Partisan Voting Index D+1).

Kansas

• : Republican incumbent Jerry Moran has announced that he will run for Sam Brownback's open United States Senate seat, thus vacating his House seat. Six Republicans have entered the race: state Senator Tim Huelskamp, state Senator and the 2006 Republican nominee for governor Jim Barnett, former Brownback chief-of-staff Rob Wasinger, college instructor Sue Boldra, real-estate agent Tracey Mann, and former Salina Mayor Monte Shadwick. The district, which encompasses western Kansas and includes Salina, Hutchinson, and Dodge City, gave McCain 69% of the vote in 2008. (Cook Partisan Voting Index R+23).

• : Freshman Republican incumbent Lynn Jenkins is facing a challenge from Democratic Topeka based state Senator Laura Kelly. Video of Jenkins has surfaced saying the Republican Party needed a "Great White Hope." This district includes eastern parts of Kansas including Topeka, Manhattan, and Leavenworth. McCain won 55% here in 2008. (Cook Partisan Voting Index] R+9).

• : Democratic incumbent Dennis Moore will retire instead of run for reelection. Former state Representative Patricia Lightner, Daniel Gilyeat, and John Rysavy are running for the Republican nomination. Two more Republicans, State Representative Kevin Yoder and 2008 candidate Nick Jordan are considering running. The district consists of the Kansas City region including Overland Park and eastern Lawrence. Obama won 51% here in 2008. (Cook Partisan Voting Index R+3).

• : Republican incumbent Todd Tiahrt has announced that he will run for Kansas's open United States Senate seat. Republican state Senators Dick Kelsey and Jean Schodorf, Republican National Committeeman Mike Pompeo, businessman Jim Anderson, and Wichita oilman, Willis Hartman announced they will run for the seat. Retired court service officer Robert Tillman and state Representative Raj Goyle will run in the Democratic primary. Goyle raised more than four times any Republican vying for the seat in the third fundraising quarter of 2009. The district, which encompasses south centrel Kansas including Wichita, Newton, and Arkansas City, gave John McCain 58% of the vote in 2008. (Cook Partisan Voting Index R+14)

Kentucky

Louisiana

• : Freshman Republican Anh “Joseph” Cao defeated indicted Democratic incumbent William Jefferson in 2008 in an upset. Democratic state Representative Cedric Richmond, who unsuccessfully ran against Jefferson in the Democratic primary in 2008, and State Representative Juan LaFonta have announced they will run. Democratic state Senator Cheryl Gray may also run. This urban New Orleans based district gave Obama 75% in 2008. (Cook Partisan Voting Index D+25).

• : Democratic incumbent Charlie Melancon is vacating this seat in order to run for the U.S. Senate in 2010. Republican state Representative Nickie Monica has expressed interest in the race, and professor Kristian Magar has already filed. Attorney Ravi Sangisetty has announced his candidacy as a Democrat. Other potential Republican candidates include former state House Speaker Hunt Downer, Plaquemines Parish President Billy Nungesser, St. John Parish President Bill Hubbard, and Lafourche Parish President Charlotte Randolph. On the Democratic side, potential candidates include state Representatives Fred Mills, Damon Baldone, and Gary Smith, and attorney Ravi Sangisetty. Additionally, both parties are trying to recruit Scott Angelle, a Democrat who serves as Republican Governor Bobby Jindal's natural resources secretary. This south-central Louisiana district includes New Iberia, Houma, Thibodaux, and Laplace. McCain won 61% here in 2008. (Cook Partisan Voting Index R+12).

Maine

• : Four term Blue Dog Democratic incumbent Mike Michaud is considering running for governor. Businessman Jason Levesque will seek the Republican nomination. This district is the largest in the Northeast and encompasses the northern and western parts of the state including the cities of Lewiston, Bangor, and Presque Isle. Obama won 55% of the vote here in 2008. (Cook Partisan Voting Index D+3).

Maryland

• : Freshman Democrat Frank Kratovil defeated Republican state Senator Andy Harris by a margin of 49% to 48% in 2008. Harris, businessman Grady Romblad, and Jefferson Ghrist will face off in the Republican primary. Other potential Republican candidates include state Senator EJ Pipkin, who Harris defeated in the 2008 Republican primary, former state House Majority Leader Alfred Redmer, state Senator Richard F. Colburn, Anne Arundel County Executive John R. Leopold, and state Delegate Jeannie Haddaway-Riccio. The district, which consists of Maryland's Eastern Shore as well as part of Anne Arundel County, gave McCain 58% of the vote in 2008. (Cook Partisan Voting Index R+13).

• : Democratic incumbent Donna Edwards may face a primary challenge from state Delegate Herman L. Taylor, Jr. or former Capitol Hill staffer Glenn Ivey. The district includes the inner part of Prince George's County and part of Montgomery County. Obama won 85% here in 2008. (Cook Partisan Voting Index D+31).

Massachusetts

Michigan

• : Republican Peter Hoekstra announced he will retire in order to run for governor. state Representative Bill Huizenga, former pro-football player Jay Riemersma, businessman Bill Cooper, and state Senator Wayne Kuipers will face off for the Republican nomination. Author, teacher, and activist Bob Wood has announced his candidacy as a Democrat. This western Michigan district includes the counties of Muskegon, Holland, and Ludington. McCain won 51% of the vote here in 2008. (Cook Partisan Voting Index R+7).

• : Freshman Democrat Mark Schauer unseated Republican Tim Walberg 48.6% to 46.5% in 2008. Walberg is running again but will face the following Republicans in a primary election: Iraq War veteran Brian Rooney, and real estate executive Marvin Carlson. Businessman Bill Martin, another Republican, has said he is considering the race. This south central Michigan district includes Battle Creek, Jackson, and Adrian. Obama won 52% here in 2008. (Cook Partisan Voting Index R+2).

• : Freshman Democrat Gary Peters unseated eight-term Republican Joe Knollenberg by a 52% to 43% margin in 2008. Peters is facing a challenge from Paul Welday, a former Knollenberg Chief of Staff and a former leader of the Oakland County Republican Party, and former State Representative Andrew Raczkowski. This suburban Detroit district includes eastern Oakland County, including Rochester Hills, Troy, Royal Oak, Pontiac, Waterford, and Farmington Hills. Obama won 56% here in 2008. (Cook Partisan Voting Index D+2).

• : Republican incumbent Candice Miller is a potential candidate for governor. This southeastern Michigan district includes northern Macomb County, Port Huron, and most of the Michigan "Thumb". McCain won 50% here in 2008. (Cook Partisan Voting Index R+5).

• : In 2008, incumbent Republican Thad McCotter was reelected by only 51% to 45% against an underfunded challenger. National Democrats are seeking to target McCotter. Fundraising consultant Natalie Mosher has announced her candidacy; other potential Democratic candidates include state Representatives Richard LeBlanc and Marc Corriveau. This suburban Detroit district includes Livonia, Westland, Milford, and Novi. Obama won 54% here in 2008. (Cook Partisan Voting Index EVEN).

• : Fourteen-term Democratic incumbent Sander Levin is facing a primary challenge from state Senator Mickey Switalski. This district is based in the inner Detroit suburbs, including Warren, Clinton, Eastpointe, and Southfield. Obama won 65% of the vote here in 2008. (Cook Partisan Voting Index D+12).

• : Democratic congresswomen Carolyn Cheeks Kilpatrick, mother of convicted felon and former Detroit Mayor Kwame Kilpatrick, defeated former state Representitive Mary Waters and state Senator Martha Scott in the 2008 Democratic primary 39% to 35% to 25%, respectively. Several Democrats are considering challenging Kilpatrick in 2010 including Waters, City Councilwoman Sheila Cockrel, and state Senators Buzz Thomas and Hanson Clarke. The district includes much of Detroit , as well as the suburbs of Lincoln Park and Wyandotte. Obama won 85% here in 2008. (Cook Partisan Voting Index D+31).

Minnesota

• : Republican incumbent Erik Paulsen is facing a challenge from two Democrats: Executive Director of the Minnesota Optometrists Association Jim Meffert and psychiatrist Maureen Hackett. This district includes the Hennepin County suburbs of Bloomington, Brooklyn Park, and Plymouth. Obama won 52% here in 2008. (Cook Partisan Voting Index EVEN)

• : Republican incumbent Michele Bachmann defeated her Democratic opponent, former state Transportation Commissioner Elwyn Tinklenberg, 46.4% to 43.4% in 2008. In her Congressional career Bachmann has made a number of controversial comments, including calling "on Minnesotans to become 'armed and dangerous' in resisting President Obama’s energy policies," leading Democrats to target her for defeat. Maureen Reed a former chair of the University of Minnesota’s Board of Regents and 2006 Independence Party candidate for Lieutenant Governor and state Senator Tarryl Clark are running as Democrats. Bachmann is also facing a primary challenge from attorney Chris Johnston. The district includes the northern and eastern suburbs of the Twin Cities, including Stillwater, Hugo, Andover, and Elk River, as well as St. Cloud. McCain won 53% here in 2008. (Cook Partisan Voting Index R+7)

Mississippi

• : Democrat Travis Childers will seek reelection. After being narrowly elected to a vacant seat in a 2008 special election, Childers won a full term in 2008 with a 54% to 46% margin. Republican state Senator Alan Nunnelee is running. Former Europa mayor Henry Ross is considering a Republican primary to Nunnelee and will decide at the start of 2010. This Northern Mississippi district includes the cities of Tupelo, Southaven, and Columbus. McCain won 62% of the vote here in 2008. (Cook Partisan Voting Index R+14).

Missouri

• : Democratic incumbent Lacy Clay is considering vacating this seat in order to run for the state's open United States Senate seat. The district includes the northern part of the city of St. Louis as well as the northeastern part of St. Louis County, including University City, Maryland Heights, and Ferguson. Obama won 80% here in 2008. (Cook Partisan Voting Index D+27).

• : Democratic incumbent Ike Skelton has easily been reelected by overwhelming margins for years. However, Skelton has three Republican challengers so far: former state Representative Vicky Hartzler, state Senator Bill Stouffer, and computer security company president James Scholz. Stouffer has praised Skelton in the past and has sponsored a bill to name a bridge after the incumbent. This west central Missouri district includes some of Kansas City's suburbs as well as Jefferson City. McCain won 60% here in 2008. (Cook Partisan Voting Index R+14).

• : Republican incumbent Roy Blunt is running for the United States Senate. Current Republican candidates include Greene County Prosecutor Darrell Moore, state Senators Jack Goodman and Gary Nodler, autioneer Billy Long, college instructor Jeff Wisdom, and businessman Michael Wardell. Other potential Republican candidates include former state Representitive B.J. Marsh, Jasper County Republican Party chairman John Putnam, Nixa Alderman Kevin Elmer, state Representitive Bryan Stevenson, and Greene County Circuit Clerk Steve Helms. This southwestern Missouri district includes Springfield and Joplin. McCain won 63% here in 2008. (Cook Partisan Voting Index R+17).

Montana

Nebraska

• : Republican incumbent Lee Terry had a difficult reelection in 2008, winning 51.9% of the vote. He will face a challenge from Democratic state Senator Tom White. Terry is also facing a challenge in the Republican primary from conservative businessman Matt Sakalosky. This eastern Nebraska district includes Omaha and its suburbs. Obama won 50% here in 2008. (Cook Partisan Voting Index R+6).

Nevada

• : Republican incumbent Dean Heller has announced he is running for reelection, although he has not ruled out running for Governor. Former state Senator Jack Schofield is running as a Democrat. This district includes Reno, Sparks, Carson City, and the "Cow Counties". McCain won 49% here in 2008. (Cook Partisan Voting Index: R+5)

• : Freshman Democrat Dina Titus will face a challenge from Republican former state Senator Joe Heck and real estate investor Rob Lauer. Titus may also face from other Republicans including Clark County Republican Party Chairman Brian Scroggins, former Nevada state Controller Steve Martin and James Dean Leavitt, a lawyer and regent for the Nevada System of Higher Education. The district is based in the Las Vegas suburbs, including East Las Vegas, Spring Valley, Henderson, Boulder City, and Laughlin. Obama won 55% here in 2008. (Cook Partisan Voting Index: D+2)

New Hampshire

• : Democratic incumbent Carol Shea-Porter will seek reelection. She is expected to be targeted by the National Republican Congressional Committee, and the district has been noted as one of the best chances for a Republican pick up in New England in 2010. It also has been marked by Chris Cillizza of the Washington Post's "House Line" column as one of the top five districts to most likely switch parties in 2010. Cited as one of the top tier recruits of the National Republican Congressional Committee for 2010, Republican Manchester mayor Frank Guinta is running for this seat. Other possible Republican candidates include Robert Bestani, a Newmarket businessman, Republican National Committeeman Sean Mahoney, and 2008 candidate John Stephen, the state's former Health Commissioner. The district consists of the eastern half of New Hampshire, including the cities of Manchester, Rochester, Portsmouth, Laconia, Derry, and Dover. Obama won 53% of the vote in this district in 2008. (Cook Partisan Voting Index EVEN).

• : Democratic incumbent Paul Hodes is vacating this seat to run for the United States Senate. On the Democratic side, lawyer and party activist Ann McLane Kuster and state Representative John DeJoie are running, with party activist and 2002 nominee Katrina Swett likely to run as well. Executive Councilor Deb Pignatelli or her husband Mike Pignatelli are also potential Democratic candidates. 2008 nominee Jennifer Horn, and former congressman Charles Bass will run as Republicans. Former Republican State Representative Bob Giuda is a likely candidate. The district consists of the western half of New Hampshire including the cities of Nashua, Concord, Keene, Claremont, Lebanon, and Plymouth. Obama won 56% of the vote here in 2008. (Cook Partisan Voting Index D+3).

New Jersey

• : Freshman Democrat John Adler defeated Lockheed Martin executive Chris Myers 51.7% to 48.3% in 2008. Republicans are targeting this seat. Adler has drawn one Republican challenger so far, former Tabernacle committeeman Justin M. Murphy who finished third in the 2008 Republican primary for this seat behind Myers and Ocean County Freeholder John P. Kelly. Other potential Republican candidates include Myers, Kelly, former Philadelphia Eagles player Jon Runyan , Ocean County State Committeewoman Virginia “Ginny” Haines, Freeholder Bill Haines, and state Assemblywoman Dawn Marie Addiego. This south central New Jersey district includes Marlton, Mount Holly, Cherry Hill, and Toms River. Obama won 52% of the vote here in 2008. (Cook Partisan Voting Index R+1). Some have also suggested Lacey Township Board of Education Member and Toms River Director of Recreation, Eric Schubiger.

New Mexico

• : Freshman Democrat Martin Heinrich will face a challenge from former statewide Republican party vice chairman Jon Barela. Republican Kevin Daniels, an owner of a chain of funeral homes who can self finance his own campaigns may enter the race as well. This district consists of the central area of New Mexico including Albuquerque. Obama won 60% in 2008. (Cook Partisan Voting Index D+5).

• : Freshman Democrat Harry Teague will be challenged by Republican Steve Pearce, who held this seat until 2008, when he ran for the United States Senate. The district consists of southern New Mexico including Silver City, Las Cruces, Roswell, and the Little Texas region. McCain won 50% of the vote here in 2008. (Cook Partisan Voting Index R+6).

New York

• : In 2008, Democratic incumbent Tim Bishop was reelected with 58% against an unknown opponent. This year, he will face a challenge from wealthy businessman Randy Altschuler. Bishop got some adverse press when a June 23 Town Hall meeting in Setauket drew some 200 protesters who were angry at Bishop's vote for the Cap and Trade bill and federal bailouts, and the meeting grew so vocal that Bishop had to be escorted to his car by five county policemen. This district, which includes eastern Suffolk County, gave Obama 51% in 2008. (Cook Partisan Voting Index EVEN).

• : Democratic incumbent John Hall is facing a challenge from Republican ophthalmologist Nan Hayworth. This Hudson Valley district includes Peekskill and West Point. Obama won 51% here in 2008. (Cook Partisan Voting Index R+3).

• : Democratic venture capitalist Scott Murphy won a March 2009 special election for this seat, defeating then- state Assembly Republican leader Jim Tedisco by 726 votes. Some New York Republican leaders are encouraging Tedisco to run again in 2010; other potential Republican candidates include 2006 Gubernatorial nominee John Faso and former New York Secretary of State Sandy Treadwell, who was defeated here by then Congresswoman Kirsten Gillibrand 38% to 62% in 2008. This Upstate New York district includes Hudson, Saratoga Springs, and Glens Falls. Obama won 51% here in 2008. (Cook Partisan Voting Index R+2).

• : Democratic incumbent Bill Owens won a special election in 2009 by 48.7% to 46.5% (3024 votes) over a third party candidate, Conservative Doug Hoffman, after Republican Dierdre Scozzafava suspended her campaign and endorsed Owens less than three days before the election. While Obama won a majority of the district's 2008 presidential votes, Democratic candidate Owens failed to secure a majority in the 2009 election. The district has rarely embraced Democratic Congressional candidates; Republicans had been elected continuously since the mid-1800s, and in three of the previous six Congressional elections the district's Conservative Party candidate received more votes than a Democratic Party candidate. With less than a year before the 2010 election, a November 6, 2009 newspaper in Owen's district carried the headline "Owens Breaks 4 Campaign Promises in first hour in Congress", referring primarily to Owen's announced support and eventual vote for House Resolution 3962. Owens will likely rematch in 2010 against Hoffman, who is expected to move his residence into the district and seek the Republican nomination along with that of the Conservative Party.

• : Democratic incumbent Mike Arcuri won by a closer than expected margin over Republican challenger Richard Hanna in 2008, winning 52% to 48%. Republicans are trying to recruit Hanna for a rematch. This Upstate New York district includes Utica, Auburn, and Rome. Obama won 50% here in 2008. (Cook Partisan Voting Index R+2).

• : Freshman Democrat Eric Massa has indicated that he will run for maintaining his campaign fund for reelection. Massa is only the second Democrat (Stan Lundine being the other) to have represented the geographic area since 1913. Republican Corning Mayor Tom Reed is running to unseat Massa. Massa recently got adverse publicity when he told a group in Pennsylvania that he would vote against the interests of his district to get health care reform passed. Other pssible Republican candidates include state Assemblyman Tom O'Mara, Monroe County Executive Maggie Brooks, state Senators Catharine Young and George Winner, Chemung County Executive Tom Santulli, and attorney Bill Nojay. This Southern Tier based district includes Elmira, Corning, Olean, and suburban Rochester; the district gave McCain 50% of the vote in 2008. (Cook Partisan Voting Index R+5).

North Carolina

• : Democratic incumbent Bob Etheridge is considering vacating this seat in order to run for the United States Senate. This east-central North Carolina district includes Sanford, Spring Lake, Garner, Dunn, Smithfield, and Clinton, as well as parts of Raleigh and Fayetteville. Obama won 52% here in 2008. (Cook Partisan Voting Index R+2).

• : Freshman Democrat Larry Kissell is facing a challenge from former Army Colonel Lou Huddleston. Another potential Republican candidate is Union County District Attorney John Snyder. The district includes much of south-central North Carolina, including the cities of Laurinburg, Albemarle, Concord, Kannapolis, and parts of Charlotte and Fayetteville. Obama won 52% here in 2008. (Cook Partisan Voting Index R+2).

• : Democratic incumbent Heath Shuler faces a Republican challenge from Hendersonville Mayor Greg Newman. Other possible candidates include 2008 candidate Carl Mumpower, Henderson County and District Attorney Jeff Hunt. This Western North Carolina district includes Ashville, Hendersonville, Brevard, and Waynesville. McCain won 52% here in 2008. (Cook Partisan Voting Index R+6).

North Dakota

Ohio

• : Democrat Steve Driehaus unseated Republican Steve Chabot in 2008, winning by a margin of 52.5% to 47.5%. Chabot announced he will seek a rematch. The district includes western Cincinnati as well as some of the city's suburbs. Obama won 55% of the vote here in 2008. (Cook Partisan Voting Index D+1).

• : In 2008, Republican incumbent Jean Schmidt defeated Democrat Victoria Wells Wulsin 45% to 37%, with independent candidate David Krikorian receiving 18% of the vote. Warren County Commissioner Mike Kilburn is competing against Schmidt in a primary. Krikorian will run as a Democrat; marketing executive Surya Yalamanchili will run as an Independent. This district includes eastern Cincinnati and some of the city's suburbs as well as Portsmouth. McCain won 59% of the vote here in 2008. (Cook Partisan Voting Index R+13).

• : Republican incumbent Pat Tiberi is facing a challenge from Democratic Franklin County Commissioner Paula Brooks and from Libertarian Travis Irvine This central Ohio district includes eastern Columbus as well as some of the city's suburbs. Obama won 54% here in 2008. (Cook Partisan Voting Index D+1).

• : Freshman Democrat Mary Jo Kilroy defeated Republican then- state Senator Steve Stivers by 2,312 votes in 2008. Stivers is seeking a rematch. The district includes western Columbus and some of the city's suburbs, including Worthington, Hilliard, and Grove City. Obama won 54% of the vote here in 2008. (Cook Partisan Voting Index D+1).

• : In 2008, Democratic state Senator John Boccieri won this historically Republican district by a 55% to 45% margin. Businessman Jim Renacci, owner of the indoor football team the Columbus Destroyers, is running for this seat as a Republican as is former Ashland County Commissioner Matt Miller. This district includes northeastern Ohio and Canton. McCain won 50% here in 2008. (Cook Partisan Voting Index R+4).

• : Democratic incumbent Zack Space is facing a challenge Republican state Senator Bob Gibbs, Jeanette Moll, who ran unsuccessfully for the Republican nomination in this district 2008, and 2008 nominee Fred Dailey. This eastern Ohio district includes Zanesville and Chillicothe. McCain won 53% here in 2008. (Cook Partisan Voting Index R+7).

Oklahoma

• : Republican Mary Fallin is vacating this seat to run for governor. State Representative Mike Thompson announced his candidacy at the state's Republican convention in April. Former state Representative Kevin Calvey, who Fallin defeated in the 2006 Republican primary for this seat, is running again and is being supported by the conservative organization the Club for Growth. Physician Johnny Roy, who also ran in 2006, is another announced Republican candidate. As of September 1, 2009, Baptist General Convention of Oklahoma employee, James Lankford has also announced his candidacy. Other potential Republican candidates are Corporation Commissioners Jeff Cloud and Bob Anthony, state Senators Todd Lamb and Glenn Coffee This district includes most of Oklahoma City as well as Pottawatomie and Seminole counties. McCain won 59% of the vote here in 2008. (Cook Partisan Voting Index R+13).

Oregon

• : Democratic incumbent David Wu is likely to seek re-election. In 2008, he faced no Republican opposition, but in 2010, Tualatin sports marketing consultant Rob Cornilles has announced his candidacy. Republicans appear to be aggressively targeting Wu's seat, contrasting his environmental votes in the House with video of him driving a GMC Yukon around Washington. Obama won 61% here in 2008. (Cook Partisan Voting Index D+8).

• : Republican incumbent Greg Walden is considering a run for governor. This eastern Oregon district includes Bend, Medford, and Pendleton. McCain won 54% here in 2008. (Cook Partisan Voting Index R+10).

• : Democratic incumbent Peter DeFazio may run for governor. Republican Springfield Mayor Sid Leiken has announced his candidacy for this seat. However, Leiken has become embroiled in a controversy over a political donation he received from his mother's business, which is not registered to do business in Oregon. Small business owner Jaynee Germond has also announced her candidacy, as a Constitutionalist. The district consists of southwestern Oregon, including Eugene, Springfield, Roseburg, Coos Bay, Albany, and part of Corvallis: Obama won 54% here in 2008. (Cook Partisan Voting Index D+2).

• : Freshman Democratic incumbent Kurt Schrader will face a challenge from state Representative Scott Bruun. This district is located in the Willamette Valley and consists of Salem, parts of Portland, and Corvallis. Obama won 54% here in 2008. (Cook Partisan Voting Index D+1).

Pennsylvania

• : Democratic incumbent Kathy Dahlkemper unseated eight-term Republican Phil English in 2008 in something of a surprise. Republicans would like to win this district back into their column. Businessman Phil Huber, Elaine Surma, a senior agent with the state Attorney General's office, and former Erie County Solicitor John Onorato are running as Republicans. This Northwestern Pennsylvania district includes the city of Erie. McCain won 49% here in 2008. (Cook Partisan Voting Index R+3).

• : Democratic incumbent Jason Altmire will face a challenge from lawyer Keith Rothfus. US Attorney Mary Buchanan is pondering a run. Altmire has opposed Democrats this year on cap and trade and thus has a low "party unity" score. This Western Pennsylvania district includes Lawrence County and Beaver County and some of Pittsburgh's suburbs and exurbs, including Plum and Murryville. McCain won 55% here in 2008. (Cook Partisan Voting Index R+6).

• : Republican incumbent Jim Gerlach is retiring to run for governor. Journalist Doug Pike and Iraq War veteran Manan Trivedi are running as Democrats. Republican state Representative Curt Schroder prepared a campaign by raising money and officially announced his candidacy shortly after Gerlach's announcement. Schroder will have to face Chester County Recorder of Deeds Ryan Costello, biotech executive Steven Welch and former state Revenue Secretary Howard Cohen in the primary. This southeastern Pennsylvania district, which includes some of Philadelphia's suburbs, including Ardmore, Norristown, Phoenixville, and Coatesville, as well as part of Reading, gave Obama 58% of the vote in 2008. (Cook Partisan Voting Index D+4).

• : Democratic incumbent Joe Sestak is retiring to challenge Republican turned Democratic United States Senator Arlen Specter in the Democratic primary. State Representative Bryan Lentz, political consultant Teresa Touey, and environmental lawyer Gail Conner are running for the Democratic nomination. Another state Representative, Greg Vitali, is viewed as a potential candidate. On the Republican side, former U.S. Attorney and former Delaware County district attorney Pat Meehan is running. This suburban Philadelphia district includes most of Delaware County. Obama won 56% here in 2008. (Cook Partisan Voting Index D+3).

• : At a summer tea party, Iraq War Veteran Christopher Bain declared his intention to challenge Democratic incumbent Chris Carney., but has yet to begin fundraising and campaigning. Bain may be challenged in the Republican primary by Lackawanna Trail School Director Dan Naylor, chiropractor David J. Madeira, Northeasern PA Caucus Chairman Matthew Brann, Pike County resident Theodore Yale or Dan Meuser, who lost the 2008 Republican primary. This northeastern Pennsylvania district includes the central Susquehanna Valley. McCain won 53% here in 2008. (Cook Partisan Voting Index R+8).

• : In 2008, Democratic incumbent Paul Kanjorski was reelected by a 52% to 48% margin over Republican Hazelton Mayor Lou Barletta. While Barletta decides whether or not to run again, attorney Chris Paige has announced his candidacy with a statement of opposition to bailouts. Kanjorski will also face a primary from Lackawanna County Commissioner Corey O'Brien. This northeast Pennsylvania district includes Scranton, Wilkes-Barre, and Hazelton. Obama won 57% here in 2008. (Cook Partisan Voting Index D+4).

• : Democratic incumbent Jack Murtha beat Republican Bill Russell in 2008 58% to 42% after some controversial comments from Murtha calling his constituents "racists" and "rednecks" gave Russell a chance to pull closer in the race. Murtha will receive a primary challenge from former naval officer Ryan Bucchianeri. Russell is taking another shot at defeating Murtha, with a Republican primary challenge from businessman Tim Burns. Murtha has been linked to an investigation of the lobbying group PMA Group. This southwestern Pennsylvania district includes Johnstown. McCain won 49% of the vote in this district in 2008. (Cook Partisan Voting Index R+1).

• : Republican incumbent Charlie Dent will face a strong challenge from Bethlehem Mayor John Callahan. Also, running as an independent is Jake Towne . The district comprises all of Northampton County, most of Lehigh County and the Lehigh Valley, Indian Valley, Upper Perkiomen Valley and small parts of Berks and Montgomery counties. Obama won 56% of the vote in this district in 2008. (Cook Partisan Voting Index D+2).

Rhode Island

South Carolina

• : Republican incumbent Henry E. Brown, Jr. won a narrow 52% to 48% reelection against Democrat Linda Ketner in 2008, emboldening potential Republican challengers. Former Brown staffer Katherine Jenerette, who won 19% against Brown in the 2008 Republican primary, Carroll "Tumpy" Campbell III, the son of former Governor Carroll A. Campbell, Jr., and Isle of Palms City Councilman Ryan L. Buckhannon D.C. are running. Democrat restauranteur Robert Dobbs has announced his candidacy. Possible Democratic candidates include former state Representative Robert Barber, current state Representative Leon Stavrinakis, and Iraq War veteran Robert Burton. This eastern South Carolina district includes part of Charleston and Myrtle Beach. McCain won 56% here in 2008. (Cook Partisan Voting Index R+10).

• : Republican incumbent Joe Wilson defeated his Democratic challenger, Iraq War veteran Rob Miller, 54% to 46% in 2008. Miller is running again. In September 2009 Wilson caused a controversy when he shouted "You lie!" at President Barack Obama during Obama's healthcare speech to Congress. The controversy has financially benefited both campaigns, with each reporting that it has raised over $1 million. A poll conducted a day after the outburst by the Democratic affiliated pollster Public Policy Polling found Miller ahead of Wilson 44% to 43%. The district includes Hilton Head Island as well as part of Columbia and its suburbs. McCain won 54% here in 2008. (Cook Partisan Voting Index R+9).

• : Republican incumbent J. Gresham Barrett will retire to run for governor. Announced Republican candidates for this seat include attorney Neal Collins, State Senator Shane Massey, physician Mike Vasovski, former Assistant United States Attorney James Galyean, State Representative Jeff Duncan, businessman Richard Cash, and state Representative Rex Rice. Another potential Republican candidate is Pickens County council member and former NFL player and coach Sam Wyche. On the Democratic side, former Air Force Captain Jane Dyer is running. The district, which consists of the western part of South Carolina including Anderson, Easley, Greenwood, Edgefield, and Aiken, gave McCain 64% of the vote in 2008. (Cook Partisan Voting Index R+17).

• : Republican Bob Inglis is facing primary election challenges from political science professor and former Historian of the U.S. House Christina Jeffrey, information systems consultant Jim Lee, construction company owner Rick Mahler, Spartanburg County Solicitor Trey Gowdy, and state Senator David Thomas. Other potential Republican candidates include Lieutenant Governor Andre Bauer, business man Tim Carnes, and former Greenville County Republican chairman Steven Brown. The district, which includes the cities of Greenville and Spartanburg, gave McCain 60% of the vote in 2008. (Cook Partisan Voting Index R+15).

• : 14-term incumbent Democrat John Spratt has held this district even while it has trended Republican nationally. Republican state Senator Mick Mulvaney is entering the race. This north central South Carolina district includes the city of Rock Hill. McCain won 53% in 2008. (Cook Partisan Voting Index R+7).

South Dakota

• : Democratic incumbent Stephanie Herseth Sandlin is running for reelection. Communications consultant Thad Wasson, state Representative Blake Curd, and State Secretary of State Chris Nelson are all Republican candidates competing in the primary election. The Republican Party is questioning Herseth Sandlin's votes for the Omnibus and the Stimulus. The district consists of the entire state of South Dakota. McCain won 53% here in 2008. (Cook Partisan Voting Index R+9).

Tennessee

• : Freshman Republican Phil Roe may face a rematch from former Congressman David Davis in the Republican primary. Roe unseated Davis in the 2008 primary by 500 votes. This East Tennessee district includes the Tri-Cities and Morristown. The winner of the GOP primary is all but assured of representing the district in Congress as this is one of the safest seats for the GOP; it has held the seat continuously since 1881 and, since prior to the Civil War, the GOP or its predecessors has held the seat for all but four years. McCain won 70% of the vote in this district in 2008. (Cook Partisan Voting Index R+21).

• : Republican Representative Zach Wamp has announced that he will be running for governor in 2010. Republicans Van Irion, Tim Gobble, the Bradley County Sheriff, former radio host Chuck Fleischmann, businessman Mark DeVol, electrical engineer Tom Crangle, and state Republican Party Chair Robin Smith have declared their intentions to run. On the Democratic side, former state Insurance Commissioner Paula Flowers and computer systems analysts Brent Benedict, who Wamp defeated in 2006, will run for this seat. This East Tennessee district, which includes Chattanooga and Oak Ridge, gave John McCain 62% of the vote in 2008. (Cook Partisan Voting Index R+13).

• : Democratic incumbent Steve Cohen is facing a primary challenge from former Memphis Mayor Willie Herenton. Cohen is the only white member of Congress to represent a majority African-American district. In August 2009 Herenton caused confusion when he considered running for the mayorship he had just vacated, but eventually chose to stay in the race against Cohen. The district consists of most of the city of Memphis. Obama won 77% of the vote here in 2008. (Cook Partisan Voting Index D+23).

Texas

• : Republican Representative Michael McCaul will run for reelection. Democratic Austin high-tech executive Jack McDonald has formed an exploritory committee for a possible campaign for this seat. McDonald received attention from national Democrats in April 2009 after he announced he had raised $309,000 in five weeks. The district includes parts of northwest, west, central, and north Austin, Pflugerville, Giddings, Brenham, and some of Houston's western suburbs, including Cypress, Katy, and Tomball. McCain won 55% of the vote here in 2008. (Cook Partisan Voting Index R+10).

• : Democratic Representative Chet Edwards was reelected by a 53% to 45% against Republican small business owner Rob Curnock, who was overwhelmingly outspent. Curnock is running again; businessman Darren Yancy is also running, while businessman Chuck Wilson has formed an exploratory committee. Other potential Republican candidates include David McIntyre, director of the Integrative Center for Homeland Security at Texas A&M, retired Air Force Colonel Jeff Beene, and state Senator Steve Ogden. This east central Texas district district includes Waco, College Station, and Bryan. McCain won 67% in 2008. (Cook Partisan Voting Index R+20).

Utah

• : Freshman Republican Jason Chaffetz has not decided whether to seek reelection or to run for another office, such as the United States Senate. This central Utah district includes part of Salt Lake County and Provo. McCain won 67% here in 2008. (Cook Partisan Voting Index R+26).

Vermont

Virginia

• : Freshman Democrat Glenn Nye is expected to be targeted by state Republicans. Brigadier general Bert Mizusawa, Chuck Smith, a retired Marine, attorney and the former chairman of the Virginia Beach Republican Party, is running, as are four businessman: Scott Taylor, Ed Maulbeck, Ben Loyola, and Scott Rigell. Other potential Republican candidates include former Amerigroup CEO Jeff McWaters, and Virginia Beach Mayor Will Sessoms. The district includes Virginia Beach, parts of Norfolk, and parts of Hampton. Obama won 50% here in 2008. (Cook Partisan Voting Index R+5).

• : Freshman Democrat Tom Perriello unseated Republican Virgil Goode by 727 votes in 2008. Six Republicans have announced their candidacies so far: Educator and Republican activist Feda Kidd Morton, private real estate investor Laurence Verga, Albemarle County Supervisor Ken Boyd, state Senator Robert Hurt, businessman Ron Ferrin, and Michael McPadden. Assembly line worker Bradley Rees, who had originally filed to run as a Republican said he will instead run on the Conservative Party ticket. The district includes much of south-central Virginia including the cities of Danville and Charlottesville. McCain won 51% here in 2008. (Cook Partisan Voting Index R+5).

• : Republican incumbent Frank Wolf is running for reelection. Democratic Businessman Patrick Lewis has announced he will attempt to unseat Wolf. Other potential Democratic candidates include state Senator Mark Herring and former state Delegate David Poisson. This Northern Virginia district includes Clarke County, Loudoun County, and parts of Fairfax County, including McLean and Chantilly. Obama won 53% here in 2008. (Cook Partisan Voting Index R+2).

• : Freshman Democrat Gerald Connolly defeated Republican businessman Keith Fimian 55% to 43% in 2008. Fimian is planning to run again; other potential Republican candidates include CEO Rocky Johnson, Fairfax County Supervisor Pat Herrity, and state Senator Tim Hugo. This Northern Virginia district includes most of Fairfax County including the cities of Fairfax, Annandale, Burke, and Mount Vernon, as well as part of Prince William County. Obama won 57% here in 2008. (Cook Partisan Voting Index D+2).

Washington

• : Republican Dave Reichert is facing a challenge from Democrat Suzan DelBene, a former Microsoft vice president. Reichert may decide to run for the United States Senate against incumbent Democrat Patty Murray. This district includes some of suburban Seattle, Bellevue, Sammamish, and eastern Pierce County. Obama won 56% here in 2008. (Cook Partisan Voting Index D+3).

West Virginia

Wisconsin

• : Democratic incumbent Ron Kind running for reelection. Republican state Senator Dan Kapanke has already entered the race; other potential Republican candidates include state Representatives Michael Huebsch and Kitty Rhoades. Michael Krsiean will be running as a Constitutionalist This western Wisconsin district includes Eau Claire and La Crosse. Obama won 58% here in 2008. (Cook Partisan Voting Index D+4).

• : Democratic incumbent Steve Kagen is facing a challenge from Republican Door County Supervisor Marc Savard, Brown County Supervisor Andy Williams, businessman Reid Ribble, and physician Mark Trager. Former Niagra Mayor Joe Stern will run as an Independent. This northeastern Wisconsin district includes the cities of Green Bay and Appleton. Obama won 53% here in 2008. (Cook Partisan Voting Index R+2).

Wyoming

American Samoa

District of Columbia

Guam

Northern Mariana Islands

Puerto Rico

U.S. Virgin Islands

See also

United States Senate elections, 2010

United States House of Representatives

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External links

• The Hill: New members: Welcome to Congress, but don’t get too comfortable just yet: Top 10 most vulnerable 111th Freshmen