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United States · Election results history · 2020 House · Illinois
Election 2020 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.

2020 US House elections in Illinois

Illinois elected 18 members of the House in 2020: Democrats won 13 seats and Republicans 5.

The closest was the 14th district, decided by 1.3 points: Lauren Underwood (Democrat) beat Jim Oberweis (Republican), 50.6% to 49.3%, a margin of 1.3 points and 5,374 votes.

In the House vote by county, Republicans led in 91 of the 102 counties and Democrats in 11. The largest, Cook, cast 2,240,097 votes and went to the Democrat by 52.8 points. The closest was DeKalb, where 131 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.

Every district

DistrictDemocratVotesRepublicanVotesOthersMargin
1 Bobby Rush239,943 (73.8%) Philanise White85,027 (26.2%) 153 D+47.7
2 Robin Kelly234,896 (78.8%) Theresa Raborn63,142 (21.2%) D+57.6
3 Marie Newman172,997 (56.4%) Mike Fricilone133,851 (43.6%) 51 D+12.8
4 Chuy García187,219 (84.1%) Jesus Solorio35,518 (15.9%) D+68.1
5 Mike Quigley255,661 (70.5%) Tommy Hanson96,200 (26.5%) 10,743 D+44.0
6 Sean Casten213,777 (52.8%) Jeanne Ives183,891 (45.4%) 7,079 D+7.4
7 Danny Davis249,383 (80.4%) Craig Cameron41,390 (13.3%) 19,355 D+67.1
8 Raja Krishnamoorthi186,251 (73.2%) none 68,327 D+73.2
9 Jan Schakowsky262,045 (71.0%) Sargis Sangari107,125 (29.0%) D+42.0
10 Brad Schneider202,402 (63.9%) Valerie Mukherjee114,442 (36.1%) 30 D+27.8
11 Bill Foster194,557 (63.3%) Rick Laib112,807 (36.7%) 13 D+26.6
12 Raymond Lenzi127,577 (39.6%) Mike Bost194,839 (60.4%) R+20.9
13 Betsy Dirksen Londrigan151,648 (45.4%) Rodney Davis181,373 (54.3%) 1,005 R+8.9
14 Lauren Underwood203,209 (50.6%) Jim Oberweis197,835 (49.3%) 489 D+1.3
15 Erika Weaver88,559 (26.6%) Mary Miller244,947 (73.4%) R+46.9
16 Dani Brzozowski119,313 (35.3%) Adam Kinzinger218,839 (64.7%) 7 R+29.4
17 Cheri Bustos156,011 (52.0%) Esther Joy King143,863 (48.0%) 21 D+4.1
18 George Petrilli110,039 (29.6%) Darin LaHood261,840 (70.4%) R+40.8

The House vote in every county

CountyDemocratRepublicanOthersTotalMargin
Cook 1,682,336 75.1% 499,493 22.3% 58,268 2,240,097 D+52.8
DuPage 275,311 57.2% 152,076 31.6% 53,595 480,982 D+25.6
Will 180,594 53.4% 157,671 46.6% 338,265 D+6.8
Lake 198,211 60.0% 131,474 39.8% 902 330,587 D+20.2
Kane 129,538 57.2% 91,192 40.3% 5,833 226,563 D+16.9
McHenry 77,396 47.8% 83,093 51.4% 1,327 161,816 R+3.5
Madison 56,170 41.5% 79,031 58.5% 135,201 R+16.9
St. Clair 62,682 48.7% 61,723 47.9% 4,402 128,807 D+0.7
Winnebago 57,099 45.1% 68,124 53.8% 1,428 126,651 R+8.7
Sangamon 43,450 42.1% 59,721 57.9% 103,171 R+15.8
Champaign 54,607 58.1% 39,364 41.9% 93,971 D+16.2
McLean 37,603 43.2% 48,048 55.2% 1,423 87,074 R+12.0
Peoria 39,173 46.9% 44,394 53.1% 13 83,580 R+6.2
Tazewell 21,874 31.9% 46,642 68.1% 22 68,538 R+36.1
Rock Island 37,651 55.9% 28,694 42.6% 969 67,314 D+13.3
Kendall 33,057 53.6% 28,644 46.4% 61,701 D+7.2
LaSalle 19,954 38.2% 32,214 61.8% 52,168 R+23.5
Kankakee 20,703 41.2% 28,102 55.9% 1,494 50,299 R+14.7
Macon 19,016 38.9% 29,888 61.1% 48,904 R+22.2
DeKalb 23,676 50.1% 23,545 49.9% 47,221 D+0.3
Adams 6,986 21.1% 26,133 78.9% 33,119 R+57.8
Williamson 9,121 27.6% 23,965 72.4% 33,086 R+44.9
Vermilion 9,872 31.8% 21,204 68.2% 31,076 R+36.5
Whiteside 13,400 49.4% 13,748 50.6% 27,148 R+1.3
Grundy 7,942 29.5% 18,108 67.3% 839 26,889 R+37.8
Ogle 7,706 29.6% 18,350 70.4% 26,056 R+40.9
Henry 10,526 41.3% 14,963 58.7% 25,489 R+17.4
Boone 8,745 35.5% 15,813 64.3% 44 24,602 R+28.7
Macoupin 7,264 30.7% 16,363 69.3% 23,627 R+38.5
Knox 11,482 50.0% 11,316 49.2% 180 22,978 D+0.7
Jackson 10,252 44.8% 12,238 53.5% 404 22,894 R+8.7
Coles 8,247 36.8% 14,133 63.2% 22,380 R+26.3
Stephenson 9,646 44.0% 12,261 56.0% 21,907 R+11.9
Woodford 4,711 22.5% 16,249 77.5% 20,960 R+55.0
Monroe 5,778 27.6% 15,164 72.4% 20,942 R+44.8
Franklin 4,518 24.0% 13,927 74.1% 344 18,789 R+50.1
Clinton 4,508 24.1% 14,173 75.9% 18,681 R+51.7
Effingham 3,592 19.5% 14,870 80.5% 18,462 R+61.1
Marion 4,783 27.2% 12,296 69.9% 520 17,599 R+42.7
Bureau 5,749 33.2% 11,541 66.7% 17 17,307 R+33.5
Livingston 3,430 20.3% 13,448 79.6% 26 16,904 R+59.3
Fulton 7,885 46.9% 8,592 51.1% 334 16,811 R+4.2
Jefferson 4,183 25.2% 12,449 74.8% 16,632 R+49.7
Lee 5,319 32.2% 10,400 62.9% 825 16,544 R+30.7
Christian 3,910 24.2% 12,225 75.8% 16,135 R+51.5
Morgan 3,843 24.9% 11,169 72.4% 418 15,430 R+47.5
Randolph 3,336 22.2% 11,356 75.6% 325 15,017 R+53.4
Iroquois 2,186 15.5% 11,645 82.5% 286 14,117 R+67.0
Montgomery 3,766 28.0% 9,671 72.0% 13,437 R+43.9
Logan 3,037 23.1% 10,124 76.9% 13,161 R+53.8
McDonough 4,125 33.2% 7,934 63.9% 354 12,413 R+30.7
Jo Daviess 5,436 43.9% 6,954 56.1% 12,390 R+12.3
Shelby 2,661 22.4% 9,195 77.6% 11,856 R+55.1
Jersey 2,922 25.0% 8,764 75.0% 11,686 R+50.0
Saline 2,835 25.4% 7,713 69.1% 617 11,165 R+43.7
Perry 2,261 22.3% 7,607 75.0% 275 10,143 R+52.7
Piatt 3,000 30.2% 6,745 67.9% 188 9,933 R+37.7
Fayette 1,880 19.1% 7,968 80.9% 9,848 R+61.8
Crawford 2,274 23.9% 7,033 74.1% 190 9,497 R+50.1
Hancock 1,946 21.2% 7,230 78.8% 9,176 R+57.6
Union 2,284 25.9% 6,536 74.1% 8,820 R+48.2
Mercer 3,765 43.1% 4,976 56.9% 8,741 R+13.9
Douglas 2,225 25.8% 6,412 74.2% 8,637 R+48.5
Clark 1,983 24.0% 6,289 76.0% 8,272 R+52.1
Wayne 1,212 14.7% 7,010 85.3% 8,222 R+70.5
Richland 1,775 21.8% 6,077 74.7% 279 8,131 R+52.9
Edgar 1,916 23.8% 6,140 76.2% 8,056 R+52.4
Warren 3,394 42.5% 4,422 55.3% 174 7,990 R+12.9
Carroll 3,300 41.3% 4,682 58.7% 7,982 R+17.3
Washington 1,680 21.1% 5,965 74.9% 322 7,967 R+53.8
Bond 2,406 30.3% 5,536 69.7% 7,942 R+39.4
De Witt 2,084 26.4% 5,822 73.6% 7,906 R+47.3
Pike 1,232 15.7% 6,595 84.3% 7,827 R+68.5
White 1,533 20.5% 5,648 75.6% 289 7,470 R+55.1
Ford 1,366 19.5% 5,451 77.8% 189 7,006 R+58.3
Massac 1,734 25.3% 4,912 71.7% 208 6,854 R+46.4
Menard 1,512 22.5% 5,203 77.5% 6,715 R+55.0
Moultrie 1,739 26.0% 4,939 74.0% 6,678 R+47.9
Mason 1,590 23.8% 5,079 76.2% 6,669 R+52.3
Johnson 1,270 19.5% 4,968 76.5% 260 6,498 R+56.9
Clay 1,163 17.9% 5,332 82.1% 6,495 R+64.2
Greene 1,258 20.0% 4,643 73.7% 398 6,299 R+53.7
Marshall 1,482 24.5% 4,578 75.5% 6,060 R+51.1
Lawrence 1,461 24.1% 4,589 75.9% 6,050 R+51.7
Cumberland 1,231 20.9% 4,542 77.2% 108 5,881 R+56.3
Jasper 981 17.4% 4,313 76.7% 329 5,623 R+59.3
Cass 1,301 24.3% 3,903 72.9% 152 5,356 R+48.6
Wabash 1,218 23.0% 4,083 77.0% 5,301 R+54.0
Hamilton 907 22.1% 3,190 77.9% 4,097 R+55.7
Schuyler 844 21.4% 2,977 75.5% 123 3,944 R+54.1
Henderson 1,433 39.9% 2,157 60.1% 3,590 R+20.2
Putnam 1,197 35.9% 2,133 64.0% 1 3,331 R+28.1
Edwards 458 14.3% 2,743 85.7% 3,201 R+71.4
Stark 562 20.4% 2,198 79.6% 2,760 R+59.3
Scott 428 15.5% 2,254 81.7% 76 2,758 R+66.2
Calhoun 659 24.5% 2,032 75.5% 2,691 R+51.0
Pulaski 803 31.0% 1,787 69.0% 2,590 R+38.0
Alexander 966 38.3% 1,559 61.7% 2,525 R+23.5
Brown 384 15.4% 2,103 84.6% 2,487 R+69.1
Gallatin 663 27.3% 1,764 72.7% 2,427 R+45.4
Pope 451 20.6% 1,646 75.0% 97 2,194 R+54.5
Hardin 473 23.1% 1,571 76.9% 2,044 R+53.7

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

Illinois in every House election we hold

YearSeatsHouse vote
2024 D 14, R 3 D+5.8
2022 D 14, R 3 D+12.4
2020 D 13, R 5 D+16.0
2018 D 13, R 5 D+22.1
2016 D 11, R 7 D+7.9
2014 D 10, R 8 D+2.8
2012 D 12, R 6 D+10.6
2010 D 8, R 11 D+4.2
2008 D 12, R 7 D+23.2
2006 D 10, R 9 D+15.8
2004 D 10, R 9 D+8.1
2002 D 9, R 10 D+2.4
2000 D 10, R 10 D+12.4
1998 D 10, R 10 R+1.8
1996 D 10, R 10 D+11.0
1994 D 10, R 10 R+3.8
1992 D 12, R 8 D+12.0
1990 D 15, R 7 D+9.7