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United States · Election results history · 2006 Senate · California
Election 2006 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

2006 US Senate election in California

Dianne Feinstein (Democrat) beat Dick Mountjoy (Republican) in California in 2006, 59.4% to 35.0%, a margin of 24.4 points and 2,085,467 votes.

The Democratic hold continued from 2000, when Dianne Feinstein also won.

Democrats led in 35 of the 58 counties and Republicans in 23. The largest, Los Angeles, cast 1,934,666 votes and went to the Democrat by 39.4 points. The closest was Alpine, where 115 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Senate

CandidatePartyVotesShare
Dianne Feinstein won Democratic 5,076,289 59.4%
Dick Mountjoy Republican 2,990,822 35.0%
All other candidates 474,365 5.6%
Total8,541,476

Every county

CountyDemocratRepublicanOthersTotalMargin
Los Angeles 1,298,820 67.1% 536,200 27.7% 99,646 1,934,666 D+39.4
San Diego 403,711 53.0% 322,760 42.4% 34,875 761,346 D+10.6
Orange 321,646 45.1% 353,924 49.7% 37,096 712,666 R+4.5
Santa Clara 298,451 69.8% 106,383 24.9% 22,521 427,355 D+44.9
Alameda 307,495 76.1% 66,550 16.5% 30,173 404,218 D+59.6
Riverside 183,532 48.5% 175,543 46.4% 19,006 378,081 D+2.1
Sacramento 201,221 56.6% 134,887 37.9% 19,447 355,555 D+18.7
San Bernardino 167,821 49.4% 153,430 45.2% 18,442 339,693 D+4.2
Contra Costa 205,516 68.5% 80,764 26.9% 13,818 300,098 D+41.6
San Francisco 187,692 80.5% 19,374 8.3% 25,979 233,045 D+72.2
Ventura 115,471 53.2% 91,374 42.1% 10,110 216,955 D+11.1
San Mateo 152,082 74.8% 41,043 20.2% 10,200 203,325 D+54.6
Fresno 89,331 51.5% 76,286 43.9% 7,993 173,610 D+7.5
Sonoma 119,672 69.5% 39,619 23.0% 12,906 172,197 D+46.5
Kern 58,330 39.3% 81,944 55.2% 8,205 148,479 R+15.9
San Joaquin 75,011 54.7% 54,874 40.0% 7,224 137,109 D+14.7
Placer 53,956 44.5% 61,615 50.9% 5,594 121,165 R+6.3
Santa Barbara 68,970 57.0% 44,864 37.1% 7,157 120,991 D+19.9
Marin 82,025 77.6% 17,788 16.8% 5,946 105,759 D+60.7
Solano 64,828 63.1% 32,956 32.1% 5,025 102,809 D+31.0
Stanislaus 50,656 49.3% 47,513 46.2% 4,589 102,758 D+3.1
San Luis Obispo 47,891 50.1% 42,742 44.7% 4,977 95,610 D+5.4
Santa Cruz 65,214 73.0% 17,279 19.3% 6,891 89,384 D+53.6
Monterey 56,887 65.3% 25,400 29.1% 4,852 87,139 D+36.1
Butte 32,131 47.0% 31,316 45.8% 4,892 68,339 D+1.2
Tulare 28,694 42.1% 36,526 53.6% 2,956 68,176 R+11.5
El Dorado 28,915 43.2% 34,091 51.0% 3,853 66,859 R+7.7
Shasta 22,097 37.9% 32,876 56.4% 3,267 58,240 R+18.5
Yolo 34,548 64.3% 16,187 30.1% 3,036 53,771 D+34.1
Humboldt 27,652 58.1% 15,003 31.5% 4,964 47,619 D+26.6
Nevada 21,204 50.0% 18,618 43.9% 2,606 42,428 D+6.1
Napa 27,144 64.1% 12,958 30.6% 2,277 42,379 D+33.5
Merced 22,081 53.8% 16,914 41.2% 2,021 41,016 D+12.6
Mendocino 19,645 64.5% 7,662 25.2% 3,149 30,456 D+39.3
Madera 12,658 42.4% 15,609 52.3% 1,596 29,863 R+9.9
Sutter 9,297 39.5% 13,113 55.7% 1,138 23,548 R+16.2
Kings 10,660 47.0% 11,016 48.6% 997 22,673 R+1.6
Imperial 13,182 60.0% 7,338 33.4% 1,442 21,962 D+26.6
Tuolumne 9,535 45.5% 10,228 48.8% 1,184 20,947 R+3.3
Lake 10,830 56.4% 6,691 34.9% 1,678 19,199 D+21.6
Tehama 6,914 38.7% 9,865 55.2% 1,086 17,865 R+16.5
Calaveras 7,860 44.3% 8,642 48.7% 1,227 17,729 R+4.4
Siskiyou 6,752 41.2% 8,433 51.5% 1,203 16,388 R+10.3
Amador 6,534 44.3% 7,382 50.1% 818 14,734 R+5.8
San Benito 8,626 60.7% 4,768 33.6% 807 14,201 D+27.2
Yuba 5,487 39.9% 7,257 52.8% 994 13,738 R+12.9
Plumas 3,881 44.4% 4,345 49.7% 523 8,749 R+5.3
Lassen 2,968 35.1% 4,820 56.9% 678 8,466 R+21.9
Mariposa 3,249 43.0% 3,842 50.8% 468 7,559 R+7.8
Glenn 2,813 37.8% 4,219 56.8% 401 7,433 R+18.9
Del Norte 3,207 48.1% 2,955 44.3% 504 6,666 D+3.8
Inyo 2,641 41.4% 3,281 51.4% 456 6,378 R+10.0
Trinity 2,824 49.4% 2,356 41.2% 538 5,718 D+8.2
Colusa 1,994 41.1% 2,647 54.5% 213 4,854 R+13.5
Mono 1,829 49.0% 1,657 44.4% 248 3,734 D+4.6
Modoc 1,264 34.4% 2,093 57.0% 313 3,670 R+22.6
Sierra 641 40.7% 814 51.6% 121 1,576 R+11.0
Alpine 303 57.2% 188 35.5% 39 530 D+21.7

Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

California Senate elections we hold

YearWinnerMargin
2024 Adam B. Schiff (D) D+17.7
2022 Alex Padilla (D) D+22.1
2018 Dianne Feinstein (D) D+54.2
2016 Kamala Harris (D) D+61.6
2012 Dianne Feinstein (D) D+25.0
2010 Barbara Boxer (D) D+10.0
2006 Dianne Feinstein (D) D+24.4
2004 Barbara Boxer (D) D+19.9
2000 Dianne Feinstein (D) D+19.3
1998 Barbara Boxer (D) D+10.0
1994 Dianne Feinstein (D) D+1.9
1992 Barbara Boxer (D) D+4.9
1988 Pete Wilson (R) R+8.8
1986 Alan Cranston (D) D+1.4
1982 Pete Wilson (R) R+6.8
1980 Alan Cranston (D) D+19.4
1976 S. I. Hayakawa (R) R+3.3
1974 Alan Cranston (D) D+24.3
1970 John V. Tunney (D) D+9.5
1968 Alan Cranston (D) D+4.9
1964 George Murphy (R) R+3.1
1962 Thomas Kuchel (R) R+12.9
1958 Clair Engle (D) D+14.1
1956 Thomas Kuchel (R) R+8.3
1952 William Knowland (R) R+87.8
1950 Richard M. Nixon (R) R+18.5
1946 William F. Knowland (R) R+9.9
1944 Sheridan Downey (D) D+4.6
1940 Hiram W. Johnson (R) R+82.5
1938 Sheridan Downey (D) D+9.8
1934 Hiram Johnson (R) R+94.5
1932 William Gibbs McAdoo (D) D+12.6
1928 Hiram W. Johnson (R) R+55.9
1926 Samuel M. Shortridge (R) R+26.2
1922 Hiram W. Johnson (R) R+38.4
1920 Samuel M. Shortridge (R) R+8.3
1916 Hiram W. Johnson (R) R+31.6
1914 James D. Phelan (D) D+2.9