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United States · Election results history · 2004 Senate · California
Election 2004 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.

2004 US Senate election in California

Barbara Boxer (Democrat) beat Bill Jones (Republican) in California in 2004, 57.7% to 37.8%, a margin of 19.9 points and 2,399,806 votes.

The Democratic hold continued from 1998, when Barbara Boxer also won.

Republicans led in 31 of the 58 counties and Democrats in 27. The largest, Los Angeles, cast 2,907,036 votes and went to the Democrat by 38.5 points. The closest was Alpine, where 84 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
Barbara Boxer won Democratic 6,955,728 57.7%
Bill Jones Republican 4,555,922 37.8%
All other candidates 541,645 4.5%
Total12,053,295

Every county

CountyDemocratRepublicanOthersTotalMargin
Los Angeles 1,940,493 66.8% 822,351 28.3% 144,192 2,907,036 D+38.5
San Diego 565,457 51.5% 484,948 44.1% 48,556 1,098,961 D+7.3
Orange 458,604 43.7% 533,406 50.9% 56,768 1,048,778 R+7.1
Santa Clara 380,551 66.0% 172,008 29.8% 24,037 576,596 D+36.2
Riverside 259,169 47.4% 266,197 48.7% 21,562 546,928 R+1.3
Alameda 403,892 75.7% 107,966 20.2% 21,954 533,812 D+55.4
San Bernardino 251,776 49.8% 229,527 45.4% 24,693 505,996 D+4.4
Sacramento 252,016 54.2% 196,984 42.3% 16,278 465,278 D+11.8
Contra Costa 258,905 63.5% 135,559 33.2% 13,321 407,785 D+30.2
San Francisco 277,193 82.7% 43,029 12.8% 15,082 335,304 D+69.8
Ventura 159,920 52.1% 133,917 43.7% 12,914 306,751 D+8.5
San Mateo 196,285 70.5% 73,171 26.3% 8,841 278,297 D+44.2
Fresno 109,849 45.4% 124,937 51.6% 7,400 242,186 R+6.2
Sonoma 143,124 65.7% 64,438 29.6% 10,381 217,943 D+36.1
Kern 79,769 38.1% 118,882 56.8% 10,569 209,220 R+18.7
San Joaquin 99,074 53.0% 80,350 43.0% 7,503 186,927 D+10.0
Santa Barbara 91,055 55.1% 66,146 40.0% 8,064 165,265 D+15.1
Placer 59,554 39.7% 85,163 56.8% 5,283 150,000 R+17.1
Solano 89,779 61.3% 51,354 35.1% 5,284 146,417 D+26.2
Stanislaus 67,539 46.9% 71,527 49.7% 4,841 143,907 R+2.8
Marin 94,164 70.9% 34,301 25.8% 4,420 132,885 D+45.0
San Luis Obispo 58,212 46.5% 60,708 48.5% 6,305 125,225 R+2.0
Monterey 76,647 62.3% 40,547 33.0% 5,823 123,017 D+29.3
Santa Cruz 84,840 70.6% 28,239 23.5% 7,120 120,199 D+47.1
Tulare 36,181 37.1% 58,066 59.5% 3,262 97,509 R+22.4
Butte 42,512 45.0% 46,446 49.1% 5,589 94,547 R+4.2
El Dorado 33,715 39.6% 47,775 56.1% 3,693 85,183 R+16.5
Shasta 26,795 35.2% 45,667 60.0% 3,647 76,109 R+24.8
Yolo 44,085 61.9% 24,234 34.0% 2,858 71,177 D+27.9
Humboldt 38,016 58.8% 22,394 34.6% 4,290 64,700 D+24.1
Merced 27,975 49.6% 26,023 46.2% 2,349 56,347 D+3.5
Napa 33,577 60.3% 20,012 35.9% 2,092 55,681 D+24.4
Nevada 24,367 45.8% 26,321 49.5% 2,531 53,219 R+3.7
Madera 15,058 39.1% 22,249 57.8% 1,160 38,467 R+18.7
Mendocino 23,415 61.9% 11,131 29.4% 3,298 37,844 D+32.5
Imperial 19,498 57.6% 12,195 36.1% 2,130 33,823 D+21.6
Kings 13,485 42.7% 17,075 54.1% 1,017 31,577 R+11.4
Sutter 10,864 36.6% 17,824 60.1% 989 29,677 R+23.5
Tuolumne 11,538 44.4% 13,620 52.4% 838 25,996 R+8.0
Lake 13,812 56.3% 9,619 39.2% 1,094 24,525 D+17.1
Tehama 8,285 36.2% 13,488 58.9% 1,129 22,902 R+22.7
Calaveras 9,339 42.2% 11,865 53.6% 942 22,146 R+11.4
Siskiyou 8,215 39.9% 11,308 55.0% 1,054 20,577 R+15.0
San Benito 10,349 55.8% 7,365 39.7% 825 18,539 D+16.1
Yuba 6,926 38.9% 9,925 55.8% 935 17,786 R+16.9
Amador 7,445 42.2% 9,562 54.2% 651 17,658 R+12.0
Lassen 3,655 32.4% 7,051 62.4% 589 11,295 R+30.1
Plumas 4,347 39.6% 6,019 54.8% 614 10,980 R+15.2
Glenn 3,147 33.9% 5,739 61.8% 405 9,291 R+27.9
Del Norte 4,264 46.0% 4,513 48.7% 487 9,264 R+2.7
Inyo 3,474 40.7% 4,643 54.4% 422 8,539 R+13.7
Mariposa 3,437 40.4% 4,751 55.8% 323 8,511 R+15.4
Trinity 2,960 46.2% 3,068 47.9% 373 6,401 R+1.7
Colusa 2,228 36.6% 3,657 60.1% 200 6,085 R+23.5
Mono 2,592 50.0% 2,314 44.6% 283 5,189 D+5.4
Modoc 1,253 28.5% 2,916 66.3% 231 4,400 R+37.8
Sierra 679 34.9% 1,143 58.7% 124 1,946 R+23.8
Alpine 373 53.9% 289 41.8% 30 692 D+12.1

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