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United States · Election results history · 1948 president · Illinois
Election 1948 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.

1948 presidential election in Illinois

Harry S. Truman (Democrat) beat Thomas E. Dewey (Republican) in Illinois in 1948, 50.1% to 49.2%, a margin of 0.8 points and 33,612 votes.

Illinois voted 3.6 points more Republican than the country as a whole, where the margin was D+4.5.

The Democratic hold continued from 1944, when Franklin D. Roosevelt won.

Republicans led in 77 of the 102 counties as they stood then and Democrats in 25. The largest, Cook, cast 2,245,899 votes and went to the Democrat by 8.9 points. The closest was Moultrie, where 6 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
Harry S. Truman won Democratic 1,994,715 50.1%
Thomas E. Dewey Republican 1,961,103 49.2%
All other candidates 28,228 0.7%
Total3,984,046

Every county

CountyDemocratRepublicanOthersTotalMargin
Cook 1,216,636 54.2% 1,015,800 45.2% 13,463 2,245,899 D+8.9
St. Clair 54,260 63.4% 30,883 36.1% 474 85,617 D+27.3
Peoria 31,026 46.8% 35,018 52.8% 308 66,352 R+6.0
Madison 40,897 61.7% 25,059 37.8% 350 66,306 D+23.9
Sangamon 29,196 46.1% 33,714 53.3% 363 63,273 R+7.1
Lake 22,192 35.6% 39,456 63.3% 720 62,368 R+27.7
Du Page 15,528 24.9% 45,794 73.6% 916 62,238 R+48.6
Kane 21,176 34.7% 39,284 64.4% 532 60,992 R+29.7
Winnebago 27,145 47.4% 29,537 51.5% 631 57,313 R+4.2
Will 26,430 47.5% 28,601 51.4% 597 55,628 R+3.9
Rock Island 24,542 52.0% 22,192 47.0% 477 47,211 D+5.0
La Salle 19,666 44.3% 24,453 55.0% 321 44,440 R+10.8
Macon 21,487 53.1% 18,719 46.3% 250 40,456 D+6.8
Vermilion 16,173 45.4% 18,994 53.3% 479 35,646 R+7.9
McLean 12,904 40.9% 18,430 58.5% 183 31,517 R+17.5
Champaign 11,572 36.8% 19,156 60.9% 737 31,465 R+24.1
Adams 14,960 50.8% 14,329 48.7% 152 29,441 D+2.1
Kankakee 11,305 41.6% 15,699 57.7% 197 27,201 R+16.2
Tazewell 14,131 52.8% 12,504 46.7% 143 26,778 D+6.1
Knox 9,772 39.2% 15,016 60.2% 164 24,952 R+21.0
Macoupin 11,742 52.7% 10,198 45.7% 358 22,298 D+6.9
Franklin 11,750 54.8% 9,407 43.9% 287 21,444 D+10.9
Henry 8,489 40.4% 12,363 58.8% 159 21,011 R+18.4
McHenry 5,459 26.1% 15,387 73.4% 103 20,949 R+47.4
Williamson 9,841 48.3% 10,386 51.0% 130 20,357 R+2.7
Whiteside 5,299 28.8% 12,922 70.3% 154 18,375 R+41.5
Stephenson 7,409 40.9% 10,564 58.3% 149 18,122 R+17.4
Fulton 8,226 45.9% 9,504 53.0% 203 17,933 R+7.1
Bureau 6,463 36.4% 11,207 63.1% 78 17,748 R+26.7
Coles 8,393 49.1% 8,638 50.6% 53 17,084 R+1.4
Christian 9,366 54.9% 7,576 44.4% 120 17,062 D+10.5
Marion 8,878 52.6% 7,798 46.2% 208 16,884 D+6.4
Livingston 5,618 33.3% 11,184 66.3% 74 16,876 R+33.0
De Kalb 5,082 30.7% 11,380 68.7% 105 16,567 R+38.0
Montgomery 7,902 48.0% 8,348 50.7% 205 16,455 R+2.7
Jefferson 8,928 54.7% 7,393 45.3% 16,321 D+9.4
Saline 7,718 49.8% 7,676 49.6% 91 15,485 D+0.3
Jackson 6,939 45.0% 8,288 53.8% 181 15,408 R+8.8
Morgan 6,798 44.6% 8,398 55.1% 59 15,255 R+10.5
Iroquois 4,823 34.4% 9,051 64.6% 127 14,001 R+30.2
Randolph 6,852 49.7% 6,867 49.8% 62 13,781 R+0.1
Lee 4,368 32.5% 9,001 67.0% 72 13,441 R+34.5
Ogle 3,796 28.4% 9,519 71.2% 63 13,378 R+42.8
Hancock 5,559 43.5% 7,098 55.5% 122 12,779 R+12.0
McDonough 4,206 34.0% 8,058 65.1% 109 12,373 R+31.1
Logan 4,832 39.2% 7,431 60.4% 49 12,312 R+21.1
Fayette 5,771 49.7% 5,717 49.3% 120 11,608 D+0.5
Edgar 5,121 44.6% 6,282 54.8% 67 11,470 R+10.1
Shelby 5,589 50.7% 5,282 47.9% 158 11,029 D+2.8
Pike 5,674 54.1% 4,722 45.0% 98 10,494 D+9.1
Perry 5,043 49.3% 5,109 50.0% 74 10,226 R+0.6
Warren 3,367 33.1% 6,738 66.2% 74 10,179 R+33.1
Clinton 4,773 47.9% 5,128 51.5% 62 9,963 R+3.6
Effingham 4,940 50.1% 4,823 48.9% 96 9,859 D+1.2
Crawford 4,150 44.3% 5,111 54.6% 103 9,364 R+10.3
White 4,761 51.0% 4,498 48.2% 79 9,338 D+2.8
Alexander 4,641 49.9% 4,561 49.1% 96 9,298 D+0.9
Woodford 3,446 37.1% 5,784 62.4% 46 9,276 R+25.2
Grundy 3,255 35.2% 5,954 64.4% 31 9,240 R+29.2
Wayne 4,070 44.7% 4,984 54.7% 60 9,114 R+10.0
Lawrence 4,391 48.5% 4,472 49.4% 194 9,057 R+0.9
Jo Daviess 3,220 37.6% 5,299 61.8% 51 8,570 R+24.3
Mercer 3,117 37.0% 5,267 62.6% 36 8,420 R+25.5
Union 4,479 53.3% 3,864 46.0% 55 8,398 D+7.3
Clark 3,714 44.7% 4,477 53.9% 112 8,303 R+9.2
Carroll 2,809 34.3% 5,318 64.9% 62 8,189 R+30.6
Greene 4,035 52.2% 3,639 47.1% 53 7,727 D+5.1
De Witt 3,290 43.8% 4,178 55.6% 45 7,513 R+11.8
Washington 2,737 37.3% 4,544 62.0% 49 7,330 R+24.7
Cass 3,776 52.3% 3,391 47.0% 50 7,217 D+5.3
Douglas 2,893 40.6% 4,181 58.6% 55 7,129 R+18.1
Clay 3,160 44.5% 3,782 53.2% 166 7,108 R+8.8
Mason 3,503 49.5% 3,525 49.8% 46 7,074 R+0.3
Ford 2,079 29.6% 4,903 69.9% 33 7,015 R+40.3
Boone 1,941 28.2% 4,916 71.4% 25 6,882 R+43.2
Bond 2,837 43.8% 3,438 53.0% 208 6,483 R+9.3
Richland 2,438 38.0% 3,884 60.6% 91 6,413 R+22.5
Marshall 2,514 39.8% 3,785 59.9% 19 6,318 R+20.1
Moultrie 3,037 49.3% 3,043 49.4% 81 6,161 R+0.1
Jersey 3,092 50.4% 3,021 49.2% 26 6,139 D+1.2
Piatt 2,361 38.9% 3,646 60.1% 57 6,064 R+21.2
Jasper 2,936 49.4% 2,957 49.8% 50 5,943 R+0.4
Wabash 2,857 48.4% 2,916 49.4% 125 5,898 R+1.0
Hamilton 2,750 48.5% 2,887 50.9% 32 5,669 R+2.4
Kendall 1,517 27.7% 3,925 71.8% 27 5,469 R+44.0
Monroe 2,026 37.3% 3,403 62.6% 3 5,432 R+25.3
Massac 1,842 35.9% 3,201 62.5% 82 5,125 R+26.5
Schuyler 2,464 48.6% 2,519 49.6% 91 5,074 R+1.1
Pulaski 2,344 46.6% 2,658 52.8% 31 5,033 R+6.2
Menard 2,043 41.1% 2,899 58.4% 26 4,968 R+17.2
Cumberland 2,353 48.7% 2,451 50.7% 28 4,832 R+2.0
Johnson 1,510 35.0% 2,778 64.5% 21 4,309 R+29.4
Gallatin 2,385 56.8% 1,789 42.6% 26 4,200 D+14.2
Henderson 1,465 38.2% 2,336 60.9% 37 3,838 R+22.7
Edwards 1,206 32.0% 2,491 66.1% 73 3,770 R+34.1
Stark 1,163 31.4% 2,537 68.4% 7 3,707 R+37.1
Scott 1,735 48.4% 1,840 51.3% 13 3,588 R+2.9
Brown 1,805 53.3% 1,562 46.1% 22 3,389 D+7.2
Hardin 1,358 44.0% 1,713 55.5% 16 3,087 R+11.5
Calhoun 1,377 47.1% 1,526 52.2% 20 2,923 R+5.1
Pope 916 34.0% 1,764 65.4% 16 2,696 R+31.5
Putnam 905 38.7% 1,405 60.1% 26 2,336 R+21.4

Counties as they stood in 1948; 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