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United States · Election results history · 1984 president · Illinois
Election 1984 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.

1984 presidential election in Illinois

Ronald Reagan (Republican) beat Walter Mondale (Democrat) in Illinois in 1984, 56.2% to 43.3%, a margin of 12.9 points and 620,604 votes.

Illinois voted 5.3 points more Democratic than the country as a whole, where the margin was R+18.2.

The Republican hold continued from 1980, when Ronald Reagan also won.

Republicans led in 96 of the 102 counties as they stood then and Democrats in 6. The largest, Cook, cast 2,180,735 votes and went to the Democrat by 2.6 points. The closest was Fulton, where 16 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.

Result

CandidatePartyVotesShare
Ronald Reagan won Republican 2,707,103 56.2%
Walter Mondale Democratic 2,086,499 43.3%
All other candidates 25,486 0.5%
Total4,819,088

Every county

CountyDemocratRepublicanOthersTotalMargin
Cook 1,112,641 51.0% 1,055,558 48.4% 12,536 2,180,735 D+2.6
Du Page 71,430 23.8% 227,141 75.7% 1,644 300,215 R+51.9
Lake 53,947 31.1% 118,401 68.4% 876 173,224 R+37.2
Will 45,193 36.3% 78,684 63.3% 520 124,397 R+26.9
Winnebago 44,629 40.8% 64,203 58.7% 619 109,451 R+17.9
Madison 48,352 45.7% 57,021 53.9% 340 105,713 R+8.2
Kane 31,875 30.3% 72,655 69.1% 629 105,159 R+38.8
St. Clair 52,294 50.2% 51,046 49.0% 808 104,148 D+1.2
Sangamon 34,059 38.5% 54,086 61.1% 378 88,523 R+22.6
Peoria 36,830 44.4% 45,607 55.0% 462 82,899 R+10.6
Rock Island 40,208 53.1% 35,121 46.4% 343 75,672 D+6.7
Champaign 27,266 40.7% 39,224 58.6% 435 66,925 R+17.9
McHenry 14,420 23.2% 47,282 76.2% 340 62,042 R+53.0
Tazewell 23,095 40.4% 33,782 59.1% 238 57,115 R+18.7
Macon 25,463 45.4% 30,457 54.3% 192 56,112 R+8.9
McLean 15,880 32.8% 32,221 66.6% 248 48,349 R+33.8
La Salle 20,532 42.7% 27,388 56.9% 219 48,139 R+14.2
Kankakee 15,246 38.4% 23,807 60.0% 612 39,665 R+21.6
Vermilion 16,530 41.7% 22,932 57.9% 149 39,611 R+16.2
De Kalb 10,942 34.8% 20,294 64.5% 229 31,465 R+29.7
Adams 10,336 33.7% 20,225 66.0% 88 30,649 R+32.3
Whiteside 11,226 40.0% 16,743 59.6% 127 28,096 R+19.6
Knox 12,027 44.3% 14,974 55.2% 121 27,122 R+10.9
Williamson 11,614 43.6% 14,930 56.1% 86 26,630 R+12.5
Jackson 12,105 46.7% 13,609 52.6% 182 25,896 R+5.8
Henry 10,679 42.3% 14,504 57.4% 79 25,262 R+15.1
Macoupin 10,602 46.2% 12,282 53.5% 69 22,953 R+7.3
Coles 7,156 33.6% 14,044 65.9% 95 21,295 R+32.3
Stephenson 6,723 31.8% 14,237 67.4% 171 21,131 R+35.6
Franklin 10,667 52.3% 9,656 47.4% 54 20,377 D+5.0
Marion 7,599 40.1% 11,300 59.6% 46 18,945 R+19.5
Bureau 6,925 36.9% 11,741 62.6% 99 18,765 R+25.7
Ogle 4,803 26.1% 13,503 73.4% 90 18,396 R+47.3
Fulton 9,131 49.7% 9,147 49.8% 99 18,377 R+0.1
Livingston 4,567 27.0% 12,291 72.6% 61 16,919 R+45.7
Jefferson 7,200 42.6% 9,642 57.1% 43 16,885 R+14.5
Christian 7,541 46.7% 8,534 52.8% 77 16,152 R+6.1
Morgan 5,361 33.3% 10,683 66.4% 53 16,097 R+33.1
Randolph 6,355 40.1% 9,415 59.5% 59 15,829 R+19.3
Woodford 4,425 29.0% 10,758 70.4% 89 15,272 R+41.5
Lee 3,919 25.9% 11,178 73.8% 58 15,155 R+47.9
Kendall 3,789 25.7% 10,872 73.8% 69 14,730 R+48.1
Iroquois 3,300 22.5% 11,327 77.1% 58 14,685 R+54.7
Montgomery 6,360 43.5% 8,191 56.1% 54 14,605 R+12.5
Grundy 4,671 32.6% 9,595 67.0% 59 14,325 R+34.4
Logan 4,052 28.8% 9,932 70.7% 62 14,046 R+41.9
McDonough 4,561 32.6% 9,383 67.0% 57 14,001 R+34.4
Clinton 4,628 33.3% 9,233 66.4% 38 13,899 R+33.1
Effingham 3,841 28.4% 9,617 71.2% 46 13,504 R+42.8
Saline 6,038 45.6% 7,176 54.2% 37 13,251 R+8.6
Boone 3,717 32.9% 7,536 66.7% 53 11,306 R+33.8
Shelby 4,317 40.2% 6,372 59.4% 41 10,730 R+19.2
Fayette 3,844 36.7% 6,607 63.1% 22 10,473 R+26.4
Perry 4,584 43.8% 5,852 55.9% 36 10,472 R+12.1
Monroe 3,256 31.9% 6,936 67.9% 25 10,217 R+36.0
Edgar 3,241 32.1% 6,821 67.5% 37 10,099 R+35.4
Hancock 3,713 37.1% 6,251 62.5% 37 10,001 R+25.4
Crawford 3,130 33.2% 6,261 66.4% 33 9,424 R+33.2
Jo Daviess 3,348 36.0% 5,877 63.2% 77 9,302 R+27.2
Pike 3,965 42.7% 5,295 57.0% 25 9,285 R+14.3
Warren 3,318 36.1% 5,846 63.6% 29 9,193 R+27.5
White 3,457 38.5% 5,500 61.2% 26 8,983 R+22.7
Wayne 2,621 29.3% 6,298 70.4% 32 8,951 R+41.1
Jersey 3,762 42.1% 5,146 57.6% 26 8,934 R+15.5
Mercer 3,982 44.6% 4,907 55.0% 38 8,927 R+10.4
Douglas 2,886 33.5% 5,691 66.1% 27 8,604 R+32.6
Union 3,815 44.5% 4,721 55.1% 28 8,564 R+10.6
Clark 3,032 36.2% 5,318 63.4% 32 8,382 R+27.3
Piatt 2,840 36.0% 5,000 63.5% 39 7,879 R+27.4
Richland 2,182 27.7% 5,665 71.9% 27 7,874 R+44.2
Carroll 2,398 31.3% 5,237 68.4% 23 7,658 R+37.1
Lawrence 2,924 38.3% 4,686 61.4% 28 7,638 R+23.1
Washington 2,363 31.4% 5,129 68.2% 24 7,516 R+36.8
Mason 3,354 44.8% 4,109 54.9% 23 7,486 R+10.1
Bond 2,870 40.2% 4,240 59.5% 21 7,131 R+19.2
Clay 2,524 35.5% 4,562 64.2% 18 7,104 R+28.7
Massac 3,194 45.3% 3,827 54.3% 28 7,049 R+9.0
De Witt 2,352 34.0% 4,534 65.6% 29 6,915 R+31.6
Ford 1,763 26.5% 4,871 73.1% 29 6,663 R+46.6
Greene 2,563 38.5% 4,057 61.0% 35 6,655 R+22.4
Marshall 2,386 36.7% 4,060 62.5% 47 6,493 R+25.8
Cass 2,937 45.9% 3,435 53.7% 27 6,399 R+7.8
Moultrie 2,458 40.5% 3,593 59.2% 21 6,072 R+18.7
Menard 1,826 31.7% 3,925 68.1% 15 5,766 R+36.4
Alexander 2,872 52.5% 2,574 47.1% 21 5,467 D+5.5
Jasper 1,750 32.1% 3,673 67.3% 31 5,454 R+35.3
Wabash 1,795 32.9% 3,639 66.7% 19 5,453 R+33.8
Hamilton 2,251 42.1% 3,074 57.5% 21 5,346 R+15.4
Johnson 1,647 32.4% 3,424 67.4% 12 5,083 R+35.0
Cumberland 1,733 36.4% 3,002 63.0% 27 4,762 R+26.6
Henderson 1,969 46.0% 2,289 53.5% 20 4,278 R+7.5
Gallatin 2,164 52.6% 1,939 47.2% 9 4,112 D+5.5
Schuyler 1,533 37.7% 2,515 61.9% 13 4,061 R+24.2
Edwards 1,057 27.5% 2,778 72.2% 10 3,845 R+44.8
Pulaski 1,724 47.1% 1,923 52.5% 17 3,664 R+5.4
Putnam 1,487 43.6% 1,912 56.0% 14 3,413 R+12.5
Stark 1,072 32.3% 2,228 67.1% 18 3,318 R+34.8
Calhoun 1,443 46.4% 1,648 53.0% 16 3,107 R+6.6
Scott 943 32.1% 1,976 67.3% 16 2,935 R+35.2
Hardin 1,205 41.6% 1,689 58.3% 5 2,899 R+16.7
Pope 940 37.7% 1,545 62.0% 7 2,492 R+24.3
Brown 959 39.2% 1,478 60.4% 9 2,446 R+21.2

Counties as they stood in 1984; some have since been split, merged or renamed. Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Illinois in every presidential election we hold

YearWinnerMargin
2024 Kamala Harris (D) D+10.9
2020 Joe Biden (D) D+17.0
2016 Hillary Clinton (D) D+17.1
2012 Barack Obama (D) D+16.9
2008 Barack Obama (D) D+25.1
2004 John Kerry (D) D+10.3
2000 Al Gore (D) D+12.0
1996 Bill Clinton (D) D+17.5
1992 Bill Clinton (D) D+14.2
1988 George H. W. Bush (R) R+2.1
1984 Ronald Reagan (R) R+12.9
1980 Ronald Reagan (R) R+7.9
1976 Gerald Ford (R) R+2.0
1972 Richard Nixon (R) R+18.5
1968 Richard Nixon (R) R+2.9
1964 Lyndon B. Johnson (D) D+18.9
1960 John F. Kennedy (D) D+0.2
1956 Dwight D. Eisenhower (R) R+19.4
1952 Dwight D. Eisenhower (R) R+9.9
1948 Harry S. Truman (D) D+0.8
1944 Franklin D. Roosevelt (D) D+3.5
1940 Franklin D. Roosevelt (D) D+2.4
1936 Franklin D. Roosevelt (D) D+18.0
1932 Franklin D. Roosevelt (D) D+13.2
1928 Herbert Hoover (R) R+14.8
1924 Calvin Coolidge (R) R+35.5
1920 Warren G. Harding (R) R+42.3
1916 Charles Evans Hughes (R) R+9.2
1912 Woodrow Wilson (D) D+13.2
1908 William Howard Taft (R) R+15.5
1904 Theodore Roosevelt (R) R+28.3
1900 William McKinley (R) R+8.4
1896 William McKinley (R) R+13.1
1892 Grover Cleveland (D) D+3.1
1888 Benjamin Harrison (R) R+3.0
1884 James G. Blaine (R) R+3.7
1880 James A. Garfield (R) R+6.5
1876 Rutherford B. Hayes (R) R+3.5
1872 Ulysses S. Grant (R) R+13.3
1868 Ulysses S. Grant (R) R+11.4