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United States · Election results history · 1990 Senate · Illinois
Election 1990 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.

1990 US Senate election in Illinois

Paul Simon (Democrat) beat Lynn Martin (Republican) in Illinois in 1990, 65.1% to 34.9%, a margin of 30.1 points and 979,749 votes.

The Democratic hold continued from 1984, when Paul Simon also won.

Democrats led in 100 of the 102 counties and Republicans in 2. The largest, Cook, cast 1,323,533 votes and went to the Democrat by 42.3 points. The closest was Ford, where 88 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
Paul Simon won Democratic 2,115,377 65.1%
Lynn Martin Republican 1,135,628 34.9%
Total3,251,005

Every county

CountyDemocratRepublicanOthersTotalMargin
Cook 941,929 71.2% 381,604 28.8% 1,323,533 D+42.3
DuPage 109,975 50.2% 108,923 49.8% 218,898 D+0.5
Lake 70,951 55.9% 56,036 44.1% 126,987 D+11.7
Will 53,972 60.8% 34,829 39.2% 88,801 D+21.6
Sangamon 48,595 60.7% 31,465 39.3% 80,060 D+21.4
Kane 40,601 55.3% 32,812 44.7% 73,413 D+10.6
Winnebago 42,143 58.4% 29,961 41.6% 72,104 D+16.9
Madison 47,619 67.7% 22,722 32.3% 70,341 D+35.4
St. Clair 42,698 68.2% 19,949 31.8% 62,647 D+36.3
Peoria 31,994 65.2% 17,044 34.8% 49,038 D+30.5
McHenry 23,539 48.3% 25,209 51.7% 48,748 R+3.4
Champaign 28,662 62.4% 17,298 37.6% 45,960 D+24.7
Rock Island 30,579 68.9% 13,824 31.1% 44,403 D+37.7
Tazewell 24,886 63.6% 14,232 36.4% 39,118 D+27.2
LaSalle 24,940 65.1% 13,367 34.9% 38,307 D+30.2
Macon 25,953 67.8% 12,352 32.2% 38,305 D+35.5
McLean 19,597 57.8% 14,280 42.2% 33,877 D+15.7
Vermilion 17,760 64.1% 9,949 35.9% 27,709 D+28.2
Kankakee 17,394 64.6% 9,545 35.4% 26,939 D+29.1
Adams 16,133 65.8% 8,383 34.2% 24,516 D+31.6
Williamson 16,000 74.8% 5,394 25.2% 21,394 D+49.6
DeKalb 11,903 57.6% 8,763 42.4% 20,666 D+15.2
Whiteside 12,206 63.4% 7,055 36.6% 19,261 D+26.7
Knox 12,887 68.3% 5,984 31.7% 18,871 D+36.6
Macoupin 12,410 67.8% 5,901 32.2% 18,311 D+35.5
Henry 10,889 63.8% 6,176 36.2% 17,065 D+27.6
Coles 10,354 63.4% 5,983 36.6% 16,337 D+26.8
Franklin 12,757 78.2% 3,550 21.8% 16,307 D+56.5
Jackson 12,122 74.8% 4,094 25.2% 16,216 D+49.5
Stephenson 8,586 59.1% 5,954 40.9% 14,540 D+18.1
Christian 10,009 69.2% 4,459 30.8% 14,468 D+38.4
Randolph 10,363 72.3% 3,974 27.7% 14,337 D+44.6
Bureau 8,989 62.8% 5,326 37.2% 14,315 D+25.6
Marion 9,148 64.7% 4,996 35.3% 14,144 D+29.4
Fulton 9,745 70.1% 4,162 29.9% 13,907 D+40.1
Ogle 7,011 52.3% 6,386 47.7% 13,397 D+4.7
Morgan 7,668 58.1% 5,519 41.9% 13,187 D+16.3
Livingston 6,847 54.0% 5,829 46.0% 12,676 D+8.0
Grundy 7,207 58.3% 5,147 41.7% 12,354 D+16.7
Jefferson 8,549 69.5% 3,743 30.5% 12,292 D+39.1
Kendall 6,187 50.8% 5,992 49.2% 12,179 D+1.6
Montgomery 7,760 64.0% 4,373 36.0% 12,133 D+27.9
Effingham 7,416 62.2% 4,511 37.8% 11,927 D+24.4
Clinton 7,360 62.0% 4,507 38.0% 11,867 D+24.0
Iroquois 6,398 54.6% 5,311 45.4% 11,709 D+9.3
Woodford 6,228 55.2% 5,059 44.8% 11,287 D+10.4
Lee 5,953 53.4% 5,189 46.6% 11,142 D+6.9
Logan 6,407 57.7% 4,700 42.3% 11,107 D+15.4
Saline 7,805 76.0% 2,459 24.0% 10,264 D+52.1
McDonough 6,459 64.9% 3,490 35.1% 9,949 D+29.8
Shelby 6,147 67.4% 2,968 32.6% 9,115 D+34.9
Perry 6,856 75.2% 2,257 24.8% 9,113 D+50.5
Fayette 5,510 62.7% 3,277 37.3% 8,787 D+25.4
Boone 4,369 53.7% 3,770 46.3% 8,139 D+7.4
Jo Daviess 4,622 57.4% 3,430 42.6% 8,052 D+14.8
Edgar 4,185 52.2% 3,832 47.8% 8,017 D+4.4
White 5,004 62.5% 2,997 37.5% 8,001 D+25.1
Hancock 5,062 64.2% 2,822 35.8% 7,884 D+28.4
Jersey 5,094 65.6% 2,668 34.4% 7,762 D+31.3
Union 5,872 75.7% 1,887 24.3% 7,759 D+51.4
Monroe 4,671 60.5% 3,045 39.5% 7,716 D+21.1
Pike 5,219 67.7% 2,492 32.3% 7,711 D+35.4
Crawford 4,126 55.6% 3,290 44.4% 7,416 D+11.3
Wayne 3,857 53.5% 3,352 46.5% 7,209 D+7.0
Mercer 4,567 66.3% 2,323 33.7% 6,890 D+32.6
Douglas 4,105 60.8% 2,650 39.2% 6,755 D+21.5
Carroll 3,802 57.0% 2,873 43.0% 6,675 D+13.9
Clark 3,566 53.5% 3,098 46.5% 6,664 D+7.0
Bond 4,012 63.2% 2,332 36.8% 6,344 D+26.5
Greene 4,021 64.2% 2,245 35.8% 6,266 D+28.3
Warren 3,744 60.0% 2,494 40.0% 6,238 D+20.0
Piatt 3,807 62.6% 2,273 37.4% 6,080 D+25.2
Washington 3,237 54.3% 2,729 45.7% 5,966 D+8.5
Mason 4,096 69.1% 1,831 30.9% 5,927 D+38.2
Richland 3,175 53.7% 2,742 46.3% 5,917 D+7.3
De Witt 3,557 61.8% 2,199 38.2% 5,756 D+23.6
Lawrence 3,227 58.8% 2,265 41.2% 5,492 D+17.5
Menard 2,992 56.1% 2,342 43.9% 5,334 D+12.2
Clay 3,355 63.2% 1,955 36.8% 5,310 D+26.4
Cass 3,591 67.7% 1,713 32.3% 5,304 D+35.4
Marshall 3,213 64.0% 1,808 36.0% 5,021 D+28.0
Massac 3,660 73.4% 1,327 26.6% 4,987 D+46.8
Ford 2,482 50.9% 2,394 49.1% 4,876 D+1.8
Moultrie 3,221 67.2% 1,575 32.8% 4,796 D+34.3
Jasper 2,756 59.2% 1,901 40.8% 4,657 D+18.4
Cumberland 2,578 56.9% 1,951 43.1% 4,529 D+13.8
Wabash 2,474 57.4% 1,834 42.6% 4,308 D+14.9
Johnson 2,867 67.5% 1,380 32.5% 4,247 D+35.0
Hamilton 3,137 74.2% 1,093 25.8% 4,230 D+48.3
Alexander 3,099 77.4% 907 22.6% 4,006 D+54.7
Gallatin 2,824 80.0% 706 20.0% 3,530 D+60.0
Schuyler 2,073 61.8% 1,281 38.2% 3,354 D+23.6
Henderson 2,158 65.6% 1,134 34.4% 3,292 D+31.1
Pulaski 2,253 72.0% 874 28.0% 3,127 D+44.1
Stark 1,771 61.9% 1,091 38.1% 2,862 D+23.8
Edwards 1,370 48.3% 1,466 51.7% 2,836 R+3.4
Putnam 1,849 66.0% 952 34.0% 2,801 D+32.0
Calhoun 1,922 68.9% 869 31.1% 2,791 D+37.7
Hardin 2,003 75.8% 641 24.2% 2,644 D+51.5
Scott 1,637 62.3% 992 37.7% 2,629 D+24.5
Brown 1,596 64.0% 898 36.0% 2,494 D+28.0
Pope 1,443 69.5% 633 30.5% 2,076 D+39.0

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