# 2010 United States House of Representatives elections in California

The 2010 United States House of Representatives elections in California were held on November 2, 2010, to determine who would represent California's various congressional districts in the United States House of Representatives. In the 112th Congress, California has 53 seats in the House, apportioned accordingly after the 2000 United States census. Representatives were elected to two-year terms; those elected serve in the 112th Congress from January 3, 2011, to January 3, 2013.
According to CQ Politics, the districts considered the most competitive are the 3rd and 11th, with the 44th, 45th, and 47th as less than safe as well. The Cook Report includes the 18th and 20th.
Two districts elected new Representatives that year. Republican George Radanovich of the 19th district was succeeded by Republican Jeff Denham, and Democrat Diane Watson of the 33rd district was succeeded by Democrat Karen Bass. However, the partisan balance of the state's congressional delegation did not change, despite the strong Republican dominance in a multitude of other areas of the country.

## Overview

United States House of Representatives elections in California, 2010 :
| Party | Party | Votes | Percentage | Seats | +/– |
| | Democratic | 5,149,450 | 53.39% | 34 | |
| | Republican | 4,195,513 | 43.50% | 19 | |
| | Libertarian | 142,363 | 1.48% | 0 | |
| | American Independent | 56,907 | 0.59% | 0 | |
| | Green | 46,626 | 0.48% | 0 | |
| | Peace and Freedom | 30,714 | 0.32% | 0 | |
| | Independent | 23,639 | 0.24% | 0 | |
| Totals | Totals | 9,645,212 | 100.00% | 53 | — |
| Voter turnout | Voter turnout | 55.80% | 55.80% | | |

### By district

Results of the 2010 United States House of Representatives elections in California by district:
| District | Democratic | Democratic | Republican | Republican | Others | Others | Total | Total | Result |
| District | Votes | % | Votes | % | Votes | % | Votes | % | Result |
| District 1 | 147,307 | 62.79% | 72,803 | 31.03% | 14,482 | 6.17% | 234,592 | 100.0% | Democratic hold |
| District 2 | 98,092 | 42.85% | 130,837 | 57.15% | 11 | 0.00% | 228,940 | 100.0% | Republican hold |
| District 3 | 113,128 | 43.19% | 131,169 | 50.08% | 17,641 | 6.73% | 261,938 | 100.0% | Republican hold |
| District 4 | 95,653 | 31.44% | 186,397 | 61.27% | 22,179 | 7.29% | 304,229 | 100.0% | Republican hold |
| District 5 | 124,220 | 72.05% | 43,577 | 25.28% | 4,613 | 2.68% | 172,410 | 100.0% | Democratic hold |
| District 6 | 172,216 | 65.94% | 77,361 | 29.62% | 11,575 | 4.43% | 261,152 | 100.0% | Democratic hold |
| District 7 | 122,435 | 68.32% | 56,764 | 31.68% | 0 | 0.00% | 179,199 | 100.0% | Democratic hold |
| District 8 | 167,957 | 80.10% | 31,711 | 15.12% | 10,028 | 4.78% | 209,696 | 100.0% | Democratic hold |
| District 9 | 180,400 | 84.27% | 23,054 | 10.77% | 10,631 | 4.97% | 214,085 | 100.0% | Democratic hold |
| District 10 | 137,578 | 58.84% | 88,512 | 37.86% | 7,716 | 3.30% | 233,806 | 100.0% | Democratic hold |
| District 11 | 115,361 | 47.97% | 112,703 | 46.86% | 12,439 | 5.17% | 240,503 | 100.0% | Democratic hold |
| District 12 | 152,044 | 75.58% | 44,475 | 22.11% | 4,643 | 2.31% | 201,162 | 100.0% | Democratic hold |
| District 13 | 118,278 | 71.95% | 45,575 | 27.73% | 525 | 0.32% | 164,378 | 100.0% | Democratic hold |
| District 14 | 151,217 | 69.09% | 60,917 | 27.83% | 6,735 | 3.08% | 218,869 | 100.0% | Democratic hold |
| District 15 | 126,147 | 67.60% | 60,468 | 32.40% | 0 | 0.00% | 186,615 | 100.0% | Democratic hold |
| District 16 | 105,841 | 67.82% | 37,913 | 24.29% | 12,304 | 7.88% | 156,058 | 100.0% | Democratic hold |
| District 17 | 118,734 | 66.65% | 53,176 | 29.85% | 6,229 | 3.50% | 178,139 | 100.0% | Democratic hold |
| District 18 | 72,853 | 58.48% | 51,716 | 41.52% | 0 | 0.00% | 124,569 | 100.0% | Democratic hold |
| District 19 | 69,912 | 35.15% | 128,394 | 64.55% | 596 | 0.30% | 198,902 | 100.0% | Republican hold |
| District 20 | 46,247 | 51.70% | 43,197 | 48.30% | 0 | 0.00% | 89,444 | 100.0% | Democratic hold |
| District 21 | 0 | 0.00% | 135,979 | 100.00% | 0 | 0.00% | 135,979 | 100.0% | Republican hold |
| District 22 | 0 | 0.00% | 173,490 | 98.76% | 2,173 | 1.24% | 175,663 | 100.0% | Republican hold |
| District 23 | 111,768 | 57.77% | 72,744 | 37.60% | 8,951 | 4.63% | 193,463 | 100.0% | Democratic hold |
| District 24 | 96,279 | 40.06% | 144,055 | 59.94% | 0 | 0.00% | 240,334 | 100.0% | Republican hold |
| District 25 | 73,028 | 38.17% | 118,308 | 61.83% | 0 | 0.00% | 191,336 | 100.0% | Republican hold |
| District 26 | 76,093 | 36.52% | 112,774 | 54.13% | 19,480 | 9.35% | 208,347 | 100.0% | Republican hold |
| District 27 | 102,927 | 65.15% | 55,056 | 34.85% | 0 | 0.00% | 157,983 | 100.0% | Democratic hold |
| District 28 | 88,385 | 69.54% | 28,493 | 22.42% | 10,229 | 8.05% | 127,107 | 100.0% | Democratic hold |
| District 29 | 104,374 | 64.78% | 51,534 | 31.98% | 5,218 | 3.24% | 161,126 | 100.0% | Democratic hold |
| District 30 | 153,663 | 64.63% | 75,948 | 31.94% | 8,136 | 3.42% | 237,747 | 100.0% | Democratic hold |
| District 31 | 76,363 | 83.82% | 14,740 | 16.18% | 3 | 0.00% | 91,106 | 100.0% | Democratic hold |
| District 32 | 77,759 | 71.04% | 31,697 | 28.96% | 0 | 0.00% | 109,456 | 100.0% | Democratic hold |
| District 33 | 131,990 | 86.08% | 21,342 | 13.92% | 1 | 0.00% | 153,333 | 100.0% | Democratic hold |
| District 34 | 69,382 | 77.23% | 20,457 | 22.77% | 0 | 0.00% | 89,839 | 100.0% | Democratic hold |
| District 35 | 98,131 | 79.33% | 25,561 | 20.66% | 2 | 0.00% | 123,694 | 100.0% | Democratic hold |
| District 36 | 114,489 | 59.62% | 66,706 | 34.74% | 10,840 | 5.64% | 192,035 | 100.0% | Democratic hold |
| District 37 | 85,799 | 68.36% | 29,159 | 23.23% | 10,560 | 8.41% | 125,518 | 100.0% | Democratic hold |
| District 38 | 85,459 | 73.45% | 30,883 | 26.55% | 0 | 0.00% | 116,342 | 100.0% | Democratic hold |
| District 39 | 81,590 | 63.27% | 42,037 | 32.60% | 5,334 | 4.14% | 128,961 | 100.0% | Democratic hold |
| District 40 | 59,400 | 33.21% | 119,455 | 66.79% | 0 | 0.00% | 178,855 | 100.0% | Republican hold |
| District 41 | 74,394 | 36.78% | 127,857 | 63.21% | 35 | 0.02% | 202,286 | 100.0% | Republican hold |
| District 42 | 65,122 | 31.86% | 127,161 | 62.21% | 12,115 | 5.93% | 204,398 | 100.0% | Republican hold |
| District 43 | 70,026 | 65.50% | 36,890 | 34.50% | 0 | 0.00% | 106,916 | 100.0% | Democratic hold |
| District 44 | 85,784 | 44.39% | 107,482 | 55.61% | 0 | 0.00% | 193,266 | 100.0% | Republican hold |
| District 45 | 87,141 | 42.14% | 106,472 | 51.49% | 13,188 | 6.38% | 206,801 | 100.0% | Republican hold |
| District 46 | 84,940 | 37.79% | 139,822 | 62.20% | 20 | 0.01% | 224,782 | 100.0% | Republican hold |
| District 47 | 50,832 | 52.98% | 37,679 | 39.27% | 7,443 | 7.76% | 95,954 | 100.0% | Democratic hold |
| District 48 | 88,465 | 36.45% | 145,481 | 59.94% | 8,773 | 3.61% | 242,719 | 100.0% | Republican hold |
| District 49 | 59,714 | 31.48% | 119,088 | 62.78% | 10,875 | 5.73% | 189,677 | 100.0% | Republican hold |
| District 50 | 97,818 | 38.96% | 142,247 | 56.65% | 11,016 | 4.39% | 251,081 | 100.0% | Republican hold |
| District 51 | 86,423 | 60.05% | 57,488 | 39.95% | 5 | 0.00% | 143,916 | 100.0% | Democratic hold |
| District 52 | 70,870 | 32.06% | 139,460 | 63.09% | 10,732 | 4.85% | 221,062 | 100.0% | Republican hold |
| District 53 | 104,800 | 62.26% | 57,230 | 34.00% | 6,298 | 3.74% | 168,328 | 100.0% | Democratic hold |
| Total | 5,148,828 | 53.37% | 4,195,494 | 43.49% | 303,774 | 3.15% | 9,648,096 | 100.0% | |
Popular vote
Democratic
53.39%
Republican
43.50%
Libertarian
1.48%
Other
1.63% :
House seats
Democratic
64.15%
Republican
35.85% :
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## Districts
### District 1

California's 1st congressional district (map) has been represented by Democrat Mike Thompson of St. Helena since January 3, 1999.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 1st congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Thompson (incumbent) | 147,307 | 62.8 |
| | Republican | Loren Hanks | 72,803 | 31.1 |
| | Green | Carol Wolman | 8,486 | 3.6 |
| | Libertarian | Mike Rodrigues | 5,996 | 2.5 |
| Total votes | Total votes | Total votes | 234,592 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 2

California's 2nd congressional district (map) has been represented by Republican Wally Herger of Chico since January 3, 1987.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 2nd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Wally Herger (incumbent) | 130,837 | 57.2 |
| | Democratic | Jim Reed | 98,092 | 42.8 |
| | Independent | Mark A. Jensen (write-in) | 11 | 0.0 |
| Total votes | Total votes | Total votes | 228,940 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 3

California's 3rd congressional district (map) has been represented by Republican Dan Lungren of Gold River since January 3, 2005. In May 2016, Babulal Bera, Ami Bera's father, pleaded guilty to two felony counts of election fraud affecting the 2010 and 2012 elections, and was convicted of illegally funneling $250,000 to Bera's campaigns between 2010 and 2012.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 3rd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Dan Lungren (incumbent) | 131,169 | 50.1 |
| | Democratic | Ami Bera | 113,128 | 43.2 |
| | American Independent | Jerry L. Leidecker | 6,577 | 2.5 |
| | Libertarian | Douglas Arthur Tuma | 6,275 | 2.4 |
| | Peace and Freedom | Mike Roskey | 4,789 | 1.8 |
| Total votes | Total votes | Total votes | 261,938 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 4

California's 4th congressional district (map) has been represented by Republican Tom McClintock of Roseville since January 3, 2009.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 4th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Tom McClintock (incumbent) | 186,397 | 61.3 |
| | Democratic | Clint Curtis | 95,653 | 31.5 |
| | Green | Benjamin "Ben" Emery | 22,179 | 7.2 |
| Total votes | Total votes | Total votes | 304,229 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 5

California's 5th congressional district (map) has been represented by Democrat Doris Matsui of Sacramento since March 8, 2005.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 5th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Doris Matsui (incumbent) | 124,220 | 72.1 |
| | Republican | Paul A. Smith | 43,577 | 25.3 |
| | Peace and Freedom | Gerald Allen Frink | 4,594 | 2.6 |
| | Republican | Tony Lacy (write-in) | 19 | 0.0 |
| Total votes | Total votes | Total votes | 172,410 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 6

California's 6th congressional district (map) has been represented by Democrat Lynn Woolsey of Petaluma since January 3, 1993.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 6th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lynn Woolsey (incumbent) | 172,216 | 66.0 |
| | Republican | Jim Judd | 77,361 | 29.7 |
| | Peace and Freedom | Eugene E. Ruyle | 5,915 | 2.2 |
| | Libertarian | Joel Smolen | 5,660 | 2.1 |
| Total votes | Total votes | Total votes | 261,152 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 7

California's 7th congressional district (map) has been represented by Democrat George Miller of Martinez since January 3, 1975.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 7th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | George Miller (incumbent) | 122,435 | 68.4 |
| | Republican | Rick Tubbs | 56,764 | 31.6 |
| Total votes | Total votes | Total votes | 179,199 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 8

California's 8th congressional district (map) has been represented by Democrat Nancy Pelosi of San Francisco since January 3, 1993, when she was redistricted from the 5th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 8th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Nancy Pelosi (incumbent) | 167,957 | 80.1 |
| | Republican | John Dennis | 31,711 | 15.2 |
| | Peace and Freedom | Gloria E. La Riva | 5,161 | 2.5 |
| | Libertarian | Philip Berg | 4,843 | 2.3 |
| | Independent | Summer Shields (write-in) | 24 | 0.0 |
| Total votes | Total votes | Total votes | 209,696 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 9

California's 9th congressional district (map) has been represented by Democrat Barbara Lee of Oakland since April 7, 1998.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 9th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Barbara Lee (incumbent) | 180,400 | 84.3 |
| | Republican | Gerald Hashimoto | 23,054 | 10.8 |
| | Green | Dave Heller | 4,848 | 2.3 |
| | Libertarian | James Eyer | 4,113 | 1.9 |
| | Peace and Freedom | Larry Allen | 1,670 | 0.8 |
| Total votes | Total votes | Total votes | 214,085 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 10

California's 10th congressional district (map) has been represented by Democrat John Garamendi of Walnut Grove since November 5, 2009.
* CA - District 10 from OurCampaigns.com
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 10th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Garamendi (incumbent) | 137,578 | 58.9 |
| | Republican | Gary Clift | 88,512 | 37.8 |
| | Green | Jeremy Cloward | 7,716 | 3.3 |
| Total votes | Total votes | Total votes | 233,806 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 11

California's 11th congressional district (map) has been represented by Democrat Jerry McNerney of Pleasanton since January 3, 2007.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 11th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jerry McNerney (incumbent) | 115,361 | 48.0 |
| | Republican | David Harmer | 112,703 | 46.9 |
| | American Independent | David Christensen | 12,439 | 5.1 |
| Total votes | Total votes | Total votes | 240,503 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 12

California's 12th congressional district (map) has been represented by Democrat Jackie Speier of Hillsborough since April 10, 2008.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 12th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jackie Speier (incumbent) | 152,044 | 75.6 |
| | Republican | Mike Maloney | 44,475 | 22.2 |
| | Libertarian | Mark Paul Williams | 4,611 | 2.2 |
| | Independent | Joseph Michael Harding (write-in) | 32 | 0.0 |
| Total votes | Total votes | Total votes | 201,162 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 13

California's 13th congressional district (map) has been represented by Democrat Pete Stark of Fremont since January 3, 1993, when he was redistricted from the 9th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 13th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Pete Stark (incumbent) | 118,278 | 72.0 |
| | Republican | Forest Baker | 45,575 | 27.7 |
| | Independent | Chris Pareja (write-in) | 525 | 0.3 |
| Total votes | Total votes | Total votes | 164,378 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 14

California's 14th congressional district (map) has been represented by Democrat Anna Eshoo of Atherton since January 3, 1993.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 14th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Anna Eshoo (incumbent) | 151,217 | 69.1 |
| | Republican | Dave Chapman | 60,917 | 27.9 |
| | Libertarian | Paul Lazaga | 6,735 | 3.0 |
| Total votes | Total votes | Total votes | 218,869 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 15

California's 15th congressional district (map) has been represented by Democrat Mike Honda of San Jose since January 3, 2001.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 15th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Honda (incumbent) | 126,147 | 67.6 |
| | Republican | Scott Kirkland | 60,468 | 32.4 |
| Total votes | Total votes | Total votes | 186,615 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 16

California's 16th congressional district (map) has been represented by Democrat Zoe Lofgren of San Jose since January 3, 1993.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 16th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Zoe Lofgren (incumbent) | 105,841 | 67.9 |
| | Republican | Daniel Sahagun | 37,913 | 24.3 |
| | Libertarian | Edward M. Gonzalez | 12,304 | 7.8 |
| Total votes | Total votes | Total votes | 156,058 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 17

California's 17th congressional district (map) has been represented by Democrat Sam Farr of Carmel-by-the-Sea since June 8, 1993.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 17th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Sam Farr (incumbent) | 118,734 | 66.7 |
| | Republican | Jeff Taylor | 53,176 | 29.9 |
| | Green | Eric Petersen | 3,397 | 1.9 |
| | Libertarian | Mary V. Larkin | 2,742 | 1.5 |
| | Independent | Ronald P. Kabat (write-in) | 90 | 0.0 |
| Total votes | Total votes | Total votes | 178,139 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 18

California's 18th congressional district (map) has been represented by Democrat Dennis Cardoza of Atwater since January 3, 2003.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 18th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Cardoza (incumbent) | 72,853 | 58.5 |
| | Republican | Mike Berryhill | 51,716 | 41.5 |
| Total votes | Total votes | Total votes | 124,569 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 19

California's 19th congressional district (map) has been represented by Republican George Radanovich of Mariposa since January 3, 1995. Radanovich did not run for reelection.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 19th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jeff Denham | 128,394 | 64.6 |
| | Democratic | Loraine Goodwin | 69,912 | 35.2 |
| | Democratic | Les Marsden (write-in) | 596 | 0.2 |
| Total votes | Total votes | Total votes | 198,902 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 20

California's 20th congressional district (map) has been represented by Democrat Jim Costa of Fresno since January 3, 2005.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 20th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jim Costa (incumbent) | 46,247 | 51.8 |
| | Republican | Andy Vidak | 43,197 | 48.2 |
| Total votes | Total votes | Total votes | 89,444 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 21

California's 21st congressional district (map) has been represented by Republican Devin Nunes of Tulare since January 3, 2003.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 21st congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Devin Nunes (incumbent) | 135,979 | 100.0 |
| Total votes | Total votes | Total votes | 135,979 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 22

California's 22nd congressional district (map) has been represented by Republican Kevin McCarthy of Bakersfield since January 3, 2007.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 22nd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Kevin McCarthy (incumbent) | 173,490 | 98.8 |
| | Independent | John Uebersax (write-in) | 2,173 | 1.2 |
| Total votes | Total votes | Total votes | 175,663 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 23

California's 23rd congressional district (map) has been represented by Democrat Lois Capps of Santa Barbara since January 3, 2003, when she was redistricted from the 22nd district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 23rd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lois Capps (incumbent) | 111,768 | 57.8 |
| | Republican | Tom Watson | 72,744 | 37.6 |
| | Independent | John Victor Hager | 5,625 | 2.9 |
| | Libertarian | Darrell M. Stafford | 3,326 | 1.7 |
| Total votes | Total votes | Total votes | 193,463 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 24

California's 24th congressional district (map) has been represented by Republican Elton Gallegly of Simi Valley since January 3, 2003, when he was redistricted from the 23rd district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 24th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Elton Gallegly (incumbent) | 144,055 | 60.0 |
| | Democratic | Timothy Allison | 96,279 | 40.0 |
| Total votes | Total votes | Total votes | 240,334 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 25

California's 25th congressional district (map) has been represented by Republican Howard McKeon of Santa Clarita since January 3, 1993.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 25th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Howard McKeon (incumbent) | 118,308 | 61.9 |
| | Democratic | Jackie Conaway | 73,028 | 38.1 |
| Total votes | Total votes | Total votes | 191,336 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 26

California's 26th congressional district (map) has been represented by Republican David Dreier of San Dimas since January 3, 2003, when he was redistricted from the 28th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 26th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | David Dreier (incumbent) | 112,774 | 54.2 |
| | Democratic | Russ Warner | 76,093 | 36.5 |
| | American Independent | David L. Miller | 12,784 | 6.1 |
| | Libertarian | Randall Weissbuch | 6,696 | 3.2 |
| Total votes | Total votes | Total votes | 208,347 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 27

California's 27th congressional district (map) has been represented by Democrat Brad Sherman of Sherman Oaks since January 3, 2003, when he was redistricted from the 24th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 27th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Brad Sherman (incumbent) | 102,927 | 65.2 |
| | Republican | Mark Reed | 55,056 | 34.8 |
| Total votes | Total votes | Total votes | 157,983 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 28

California's 28th congressional district (map) has been represented by Democrat Howard Berman of North Hollywood since January 3, 2003, when he was redistricted from the 26th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 28th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Howard Berman (incumbent) | 88,385 | 69.6 |
| | Republican | Merlin Froyd | 28,493 | 22.4 |
| | Libertarian | Carlos Rodriguez | 10,229 | 8.0 |
| Total votes | Total votes | Total votes | 127,107 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 29

California's 29th congressional district (map) has been represented by Democrat Adam Schiff of Burbank since January 3, 2003, when he was redistricted from the 27th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 29th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Adam Schiff (incumbent) | 104,374 | 64.8 |
| | Republican | John P. Colbert | 51,534 | 32.0 |
| | Libertarian | Bill Cushing | 5,218 | 3.2 |
| Total votes | Total votes | Total votes | 161,126 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 30

California's 30th congressional district (map) has been represented by Democrat Henry Waxman of Los Angeles since January 3, 2003, when he was redistricted from the 29th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 30th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Henry Waxman (incumbent) | 153,663 | 64.7 |
| | Republican | Charles E. Wilkerson | 75,948 | 31.9 |
| | Libertarian | Erich D. Miller | 5,021 | 2.1 |
| | Peace and Freedom | Richard R. Castaldo | 3,115 | 1.3 |
| Total votes | Total votes | Total votes | 237,747 | 100,0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 31

California's 31st congressional district (map) has been represented by Democrat Xavier Becerra of Los Angeles since January 3, 2003, when he was redistricted from the 30th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 31st congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Xavier Becerra (incumbent) | 76,363 | 83.8 |
| | Republican | Stephen Carlton Smith | 14,740 | 16.1 |
| | Democratic | Sal Genovese (write-in) | 3 | 0.0 |
| Total votes | Total votes | Total votes | 91,106 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 32

California's 32nd congressional district (map) has been represented by Democrat Judy Chu of Monterey Park since July 14, 2009.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 32nd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Judy Chu (incumbent) | 77,759 | 71.1 |
| | Republican | Ed Schmerling | 31,697 | 28.9 |
| Total votes | Total votes | Total votes | 109,456 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 33

California's 33rd congressional district (map) has been represented by Democrat Diane Watson of Los Angeles since January 3, 2003, when she was redistricted from the 32nd district. Watson did not run for reelection.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 33rd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Karen Bass | 131,990 | 86.1 |
| | Republican | James L. Andion | 21,342 | 13.9 |
| | Democratic | Mervin Leon Evans (write-in) | 1 | 0.0 |
| Total votes | Total votes | Total votes | 153,333 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 34

California's 34th congressional district (map) has been represented by Democrat Lucille Roybal-Allard of Los Angeles since January 3, 2003, when she was redistricted from the 33rd district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 34th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lucille Roybal-Allard (incumbent) | 69,382 | 77.3 |
| | Republican | Wayne Miller | 20,457 | 22.7 |
| Total votes | Total votes | Total votes | 89,839 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 35

California's 35th congressional district (map) has been represented by Democrat Maxine Waters of Los Angeles since January 3, 1993, when she was redistricted from the 29th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 35th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maxine Waters (incumbent) | 98,131 | 79.4 |
| | Republican | K. Bruce Brown | 25,561 | 20.6 |
| | Independent | Suleiman Edmondson (write-in) | 2 | 0.0 |
| Total votes | Total votes | Total votes | 123,694 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 36

California's 36th congressional district (map) has been represented by Democrat Jane Harman of Venice since January 3, 2001.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 36th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jane Harman (incumbent) | 114,489 | 59.7 |
| | Republican | Mattie Fein | 66,706 | 34.7 |
| | Libertarian | Herb Peters | 10,840 | 5.6 |
| Total votes | Total votes | Total votes | 192,035 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 37

California's 37th congressional district (map) has been represented by Democrat Laura Richardson of Long Beach since August 21, 2007.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 37th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Laura Richardson (incumbent) | 85,799 | 68.4 |
| | Republican | Star Parker | 29,159 | 23.2 |
| | Independent | Nick Dibs | 10,560 | 8.4 |
| Total votes | Total votes | Total votes | 125,518 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 38

California's 38th congressional district (map) has been represented by Democrat Grace Napolitano of Norwalk since January 3, 2003, when she was redistricted from the 34th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 38th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Grace Napolitano (incumbent) | 85,459 | 73.5 |
| | Republican | Robert Vaughn | 30,883 | 26.5 |
| Total votes | Total votes | Total votes | 116,342 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 39

California's 39th congressional district (map) has been represented by Democrat Linda Sánchez of Lakewood since January 3, 2003.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 39th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Linda Sánchez (incumbent) | 81,590 | 63.3 |
| | Republican | Larry Steven Andre | 42,037 | 32.6 |
| | American Independent | John A. Smith | 5,334 | 4.1 |
| Total votes | Total votes | Total votes | 128,961 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 40

California's 40th congressional district (map) has been represented by Republican Ed Royce of Fullerton since January 3, 2003, when he was redistricted from the 39th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 40th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Ed Royce (incumbent) | 119,455 | 66.8 |
| | Democratic | Christina Avalos | 59,400 | 33.2 |
| Total votes | Total votes | Total votes | 178,855 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 41

California's 41st congressional district (map) has been represented by Republican Jerry Lewis of Redlands since January 3, 2003, when he was redistricted from the 40th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 41st congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jerry Lewis (incumbent) | 127,857 | 63.3 |
| | Democratic | Pat Meagher | 74,394 | 36.7 |
| | Independent | Pamela Zander (write-in) | 35 | 0.0 |
| Total votes | Total votes | Total votes | 202,286 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 42

California's 42nd congressional district (map) has been represented by Republican Gary Miller of Diamond Bar since January 3, 2003, when he was redistricted from the 41st district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 42nd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Gary Miller (incumbent) | 127,161 | 62.3 |
| | Democratic | Michael Dale Williamson | 65,122 | 31.8 |
| | Libertarian | Mark Lambert | 12,115 | 5.9 |
| Total votes | Total votes | Total votes | 204,398 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 43

California's 43rd congressional district (map) has been represented by Democrat Joe Baca of Rialto since January 3, 2003, when he was redistricted from the 42nd district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 43rd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Joe Baca (incumbent) | 70,026 | 65.5 |
| | Republican | Scott Folkens | 36,890 | 34.5 |
| Total votes | Total votes | Total votes | 106,916 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 44

California's 44th congressional district (map) has been represented by Republican Ken Calvert of Corona since January 3, 2003, when he was redistricted from the 43rd district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 44th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Ken Calvert (incumbent) | 107,482 | 55.7 |
| | Democratic | Bill Hedrick | 85,784 | 44.3 |
| Total votes | Total votes | Total votes | 193,266 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 45

California's 45th congressional district (map) has been represented by Republican Mary Bono Mack of Palm Springs since January 3, 2003, when she was redistricted from the 44th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 45th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Mary Bono Mack (incumbent) | 106,472 | 51.5 |
| | Democratic | Steve Pougnet | 87,141 | 42.2 |
| | American Independent | Bill Lussenheide | 13,188 | 6.3 |
| Total votes | Total votes | Total votes | 206,801 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 46

California's 46th congressional district (map) has been represented by Republican Dana Rohrabacher of Huntington Beach since January 3, 2003, when he was redistricted from the 45th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 46th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Dana Rohrabacher (incumbent) | 139,822 | 62.3 |
| | Democratic | Ken Arnold | 84,940 | 37.7 |
| | Democratic | Jay Shah (write-in) | 20 | 0.0 |
| Total votes | Total votes | Total votes | 224,782 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 47

California's 47th congressional district (map) has been represented by Democrat Loretta Sanchez of Anaheim since January 3, 2003, when she was redistricted from the 46th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 47th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Loretta Sanchez (incumbent) | 50,832 | 53.0 |
| | Republican | Van Tran | 37,679 | 39.3 |
| | Independent | Ceci Iglesias | 7,443 | 7.7 |
| Total votes | Total votes | Total votes | 95,954 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 48

California's 48th congressional district (map) has been represented by Republican John Campbell of Irvine since January 3, 2005.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 48th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Campbell (incumbent) | 145,481 | 60.0 |
| | Democratic | Beth Krom | 88,465 | 36.4 |
| | Libertarian | Mike Binkley | 8,773 | 3.6 |
| Total votes | Total votes | Total votes | 242,719 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 49

California's 49th congressional district (map) has been represented by Republican Darrell Issa of Vista since January 3, 2003, when he was redistricted from the 48th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 49th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Darrell Issa (incumbent) | 119,088 | 62.8 |
| | Democratic | Howard Katz | 59,714 | 31.5 |
| | American Independent | Dion Clark | 6,585 | 3.5 |
| | Libertarian | Mike Paster | 4,290 | 2.2 |
| Total votes | Total votes | Total votes | 189,672 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 50

California's 50th congressional district (map) has been represented by Republican Brian Bilbray of Carlsbad since June 13, 2006.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 50th congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Brian Bilbray (incumbent) | 142,247 | 56.7 |
| | Democratic | Francine Busby | 97,818 | 39.0 |
| | Libertarian | Lars Grossmith | 5,546 | 2.2 |
| | Peace and Freedom | Miriam E. Clark | 5,470 | 2.1 |
| Total votes | Total votes | Total votes | 251,081 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 51

California's 51st congressional district (map) has been represented by Democrat Bob Filner of San Diego since January 3, 2003, when he was redistricted from the 50th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 51st congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bob Filner (incumbent) | 86,423 | 60.1 |
| | Republican | Nick Popaditch | 57,488 | 39.9 |
| | Independent | Marcus J. Shapiro (write-in) | 5 | 0.0 |
| Total votes | Total votes | Total votes | 143,916 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### District 52

California's 52nd congressional district (map) has been represented by Republican Duncan D. Hunter of Lakeside since January 3, 2009.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 52nd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Republican | Duncan D. Hunter (incumbent) | 139,460 | 63.1 |
| | Democratic | Ray Lutz | 70,870 | 32.1 |
| | Libertarian | Michael Benoit | 10,732 | 4.8 |
| Total votes | Total votes | Total votes | 221,061 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### District 53

California's 53rd congressional district (map) has been represented by Democrat Susan Davis of San Diego since January 3, 2003, when she was redistricted from the 49th district.
* Race ranking and details from CQ Politics
* Campaign contributions from OpenSecrets
* Race profile at The New York Times
California's 53rd congressional district election, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Susan Davis (incumbent) | 104,800 | 62.3 |
| | Republican | Michael Peter Crimmins | 57,230 | 34.0 |
| | Libertarian | Paul Michael-Dekker | 6,298 | 3.7 |
| Total votes | Total votes | Total votes | 168,328 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |