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United States · Election results history · 2004 Senate · Illinois
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 Illinois

Barack Obama (Democrat) beat Alan Keyes (Republican) in Illinois in 2004, 70.0% to 27.0%, a margin of 42.9 points and 2,206,766 votes.

Illinois changed party: in 1998 it went Republican, for Peter G. Fitzgerald.

Democrats led in 92 of the 102 counties and Republicans in 10. The largest, Cook, cast 2,008,079 votes and went to the Democrat by 64.7 points. The closest was Ford, where 37 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
Barack Obama won Democratic 3,597,456 70.0%
Alan Keyes Republican 1,390,690 27.0%
All other candidates 153,374 3.0%
Total5,141,520

Every county

CountyDemocratRepublicanOthersTotalMargin
Cook 1,629,296 81.1% 329,671 16.4% 49,112 2,008,079 D+64.7
DuPage 251,445 64.3% 124,642 31.9% 14,954 391,041 D+32.4
Lake 183,717 68.6% 75,199 28.1% 8,925 267,841 D+40.5
Will 162,891 66.8% 72,786 29.8% 8,326 244,003 D+36.9
Kane 101,105 63.3% 52,319 32.8% 6,252 159,676 D+30.6
McHenry 76,652 61.6% 42,936 34.5% 4,814 124,402 D+27.1
Madison 77,208 64.0% 39,431 32.7% 3,999 120,638 D+31.3
Winnebago 74,911 62.9% 40,470 34.0% 3,727 119,108 D+28.9
St. Clair 74,447 67.1% 33,288 30.0% 3,188 110,923 D+37.1
Sangamon 57,385 62.4% 29,432 32.0% 5,181 91,998 D+30.4
Peoria 55,061 67.6% 24,888 30.5% 1,521 81,470 D+37.0
Champaign 51,813 64.5% 25,548 31.8% 2,936 80,297 D+32.7
McLean 43,027 61.6% 25,040 35.9% 1,731 69,798 D+25.8
Rock Island 49,096 71.1% 18,620 27.0% 1,356 69,072 D+44.1
Tazewell 36,058 59.7% 22,955 38.0% 1,414 60,427 D+21.7
Macon 30,729 60.8% 18,511 36.7% 1,265 50,505 D+24.2
LaSalle 32,193 65.0% 15,676 31.7% 1,640 49,509 D+33.4
Kankakee 28,164 63.8% 14,614 33.1% 1,334 44,112 D+30.7
DeKalb 26,077 65.7% 11,954 30.1% 1,663 39,694 D+35.6
Vermilion 19,500 59.2% 12,413 37.7% 1,048 32,961 D+21.5
Kendall 18,450 58.8% 11,522 36.7% 1,381 31,353 D+22.1
Adams 16,036 52.4% 13,857 45.3% 720 30,613 D+7.1
Williamson 17,113 58.9% 10,902 37.6% 1,018 29,033 D+21.4
Whiteside 17,585 67.2% 7,879 30.1% 693 26,157 D+37.1
Jackson 17,295 69.0% 6,924 27.6% 831 25,050 D+41.4
Henry 15,965 64.5% 8,219 33.2% 557 24,741 D+31.3
Knox 17,098 70.3% 6,703 27.5% 531 24,332 D+42.7
Ogle 12,903 54.8% 9,912 42.1% 743 23,558 D+12.7
Macoupin 14,423 65.1% 6,946 31.4% 785 22,154 D+33.8
Coles 12,758 57.8% 8,625 39.1% 700 22,083 D+18.7
Stephenson 12,244 59.1% 7,882 38.0% 589 20,715 D+21.1
Grundy 12,285 63.8% 6,308 32.8% 665 19,258 D+31.0
Boone 11,206 58.6% 7,317 38.3% 592 19,115 D+20.3
Franklin 11,949 63.9% 6,221 33.3% 528 18,698 D+30.6
Woodford 9,304 50.9% 8,550 46.7% 438 18,292 D+4.1
Bureau 10,648 61.1% 6,284 36.1% 489 17,421 D+25.1
Fulton 11,729 70.1% 4,556 27.2% 440 16,725 D+42.9
Marion 10,088 60.4% 6,099 36.5% 517 16,704 D+23.9
Clinton 9,437 57.1% 6,565 39.7% 526 16,528 D+17.4
Jefferson 9,111 55.8% 6,778 41.5% 443 16,332 D+14.3
Monroe 9,150 58.1% 6,089 38.7% 504 15,743 D+19.4
Effingham 6,264 40.0% 8,930 57.1% 448 15,642 R+17.0
Lee 8,873 57.1% 6,186 39.8% 488 15,547 D+17.3
Livingston 8,474 54.8% 6,513 42.1% 489 15,476 D+12.7
Christian 9,323 62.5% 5,101 34.2% 489 14,913 D+28.3
Morgan 8,578 58.4% 5,478 37.3% 640 14,696 D+21.1
McDonough 9,422 65.2% 4,693 32.5% 330 14,445 D+32.7
Randolph 9,009 62.5% 4,961 34.4% 437 14,407 D+28.1
Iroquois 6,177 46.3% 6,736 50.5% 420 13,333 R+4.2
Logan 6,945 54.0% 5,517 42.9% 401 12,863 D+11.1
Montgomery 7,903 63.5% 4,078 32.8% 461 12,442 D+30.7
Saline 6,851 60.8% 4,133 36.7% 276 11,260 D+24.1
Jo Daviess 6,714 60.8% 3,968 35.9% 369 11,051 D+24.8
Shelby 5,364 52.3% 4,626 45.1% 269 10,259 D+7.2
Perry 6,464 64.3% 3,285 32.7% 299 10,048 D+31.6
Jersey 5,670 57.9% 3,825 39.1% 296 9,791 D+18.8
Hancock 5,143 53.8% 4,125 43.2% 284 9,552 D+10.7
Fayette 4,826 52.2% 4,127 44.7% 289 9,242 D+7.6
Crawford 4,302 48.1% 4,261 47.6% 385 8,948 D+0.5
Union 4,761 54.9% 3,338 38.5% 571 8,670 D+16.4
Mercer 5,729 66.3% 2,685 31.1% 231 8,645 D+35.2
Piatt 4,548 55.0% 3,396 41.1% 328 8,272 D+13.9
Warren 5,402 65.4% 2,685 32.5% 173 8,260 D+32.9
Douglas 4,239 51.5% 3,717 45.2% 271 8,227 D+6.3
Edgar 4,014 49.2% 3,858 47.3% 280 8,152 D+1.9
Wayne 3,233 40.6% 4,502 56.5% 232 7,967 R+15.9
Carroll 4,961 62.5% 2,730 34.4% 250 7,941 D+28.1
White 4,038 51.6% 3,492 44.6% 301 7,831 D+7.0
Pike 3,887 50.2% 3,573 46.2% 282 7,742 D+4.1
Washington 4,110 53.5% 3,315 43.2% 251 7,676 D+10.4
Clark 3,566 46.5% 3,833 50.0% 266 7,665 R+3.5
De Witt 4,340 57.5% 2,973 39.4% 234 7,547 D+18.1
Richland 3,048 40.9% 4,185 56.2% 215 7,448 R+15.3
Bond 4,227 58.8% 2,717 37.8% 247 7,191 D+21.0
Massac 3,309 46.3% 3,689 51.6% 153 7,151 R+5.3
Mason 4,498 64.8% 2,230 32.1% 209 6,937 D+32.7
Lawrence 3,255 50.5% 2,956 45.9% 235 6,446 D+4.6
Marshall 3,909 60.9% 2,354 36.7% 157 6,420 D+24.2
Clay 2,505 39.8% 3,614 57.4% 180 6,299 R+17.6
Menard 3,529 56.1% 2,453 39.0% 303 6,285 D+17.1
Ford 3,021 48.4% 2,984 47.9% 231 6,236 D+0.6
Moultrie 3,449 55.4% 2,622 42.1% 153 6,224 D+13.3
Greene 3,343 57.4% 2,281 39.1% 204 5,828 D+18.2
Wabash 2,404 41.9% 3,110 54.3% 218 5,732 R+12.3
Johnson 2,781 49.9% 2,617 46.9% 178 5,576 D+2.9
Cass 3,341 61.3% 1,896 34.8% 213 5,450 D+26.5
Cumberland 2,598 49.3% 2,492 47.3% 176 5,266 D+2.0
Jasper 2,141 42.3% 2,768 54.7% 153 5,062 R+12.4
Hamilton 2,458 57.5% 1,680 39.3% 136 4,274 D+18.2
Henderson 2,704 67.1% 1,195 29.7% 131 4,030 D+37.4
Schuyler 2,241 57.7% 1,542 39.7% 100 3,883 D+18.0
Alexander 2,395 65.6% 1,148 31.4% 108 3,651 D+34.2
Putnam 2,192 67.4% 971 29.9% 88 3,251 D+37.6
Edwards 1,155 36.9% 1,876 60.0% 98 3,129 R+23.0
Gallatin 2,109 70.6% 786 26.3% 91 2,986 D+44.3
Pulaski 1,749 59.0% 1,137 38.3% 80 2,966 D+20.6
Stark 1,722 58.8% 1,119 38.2% 90 2,931 D+20.6
Calhoun 1,604 61.7% 912 35.1% 84 2,600 D+26.6
Scott 1,315 52.4% 1,101 43.9% 92 2,508 D+8.5
Brown 1,308 53.3% 1,073 43.7% 75 2,456 D+9.6
Hardin 1,253 53.8% 991 42.5% 86 2,330 D+11.2
Pope 1,211 52.5% 1,020 44.3% 74 2,305 D+8.3

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

Illinois Senate elections we hold

YearWinnerMargin
2022 Tammy Duckworth (D) D+15.3
2020 Richard J Durbin (D) D+16.0
2016 Tammy Duckworth (D) D+15.1
2014 Dick Durbin (D) D+10.9
2010 Mark Kirk (R) R+1.6
2008 Richard J. Durbin (D) D+39.3
2004 Barack Obama (D) D+42.9
2002 Richard J. Durbin (D) D+22.3
1998 Peter G. Fitzgerald (R) R+2.9
1996 Richard J. Durbin (D) D+15.4
1992 Carol Moseley-Braun (D) D+10.2
1990 Paul Simon (D) D+30.1
1986 Alan J. Dixon (D) D+31.4
1984 Paul Simon (D) D+1.9
1980 Alan J. Dixon (D) D+13.5
1978 Charles H. Percy (R) R+7.9
1974 Adlai Stevenson III (D) D+24.9
1972 Charles H. Percy (R) R+24.9
1968 Everett Dirksen (R) R+6.4
1966 Charles H. Percy (R) R+11.0
1962 Everett Dirksen (R) R+5.7
1960 Paul H. Douglas (D) D+9.4
1956 Everett Dirksen (R) R+8.4
1954 Paul H. Douglas (D) D+7.1
1950 Everett Dirksen (R) R+8.1
1948 Paul H. Douglas (D) D+10.5
1944 Scott W. Lucas (D) D+5.6
1942 C. Wayland Brooks (R) R+6.8
1938 Scott W. Lucas (D) D+3.0
1936 James H. Lewis (D) D+15.8
1932 William H. Dieterich (D) D+6.2
1930 James H. Lewis (D) D+33.3
1926 Frank L. Smith (R) R+3.7
1924 Charles S. Deneen (R) R+28.2
1920 William B. McKinley (R) R+40.0
1918 Medill McCormick (R) R+5.6
1914 Lawrence Y. Sherman (R) R+1.7