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United States · Election results history · 1948 Senate · Illinois
Election 1948 Results

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1948 US Senate election in Illinois

Paul H. Douglas (Democrat) beat C. Wayland Brooks (Republican) in Illinois in 1948, 55.1% to 44.6%, a margin of 10.5 points and 407,728 votes.

Illinois changed party: in 1942 it went Republican, for C. Wayland Brooks.

Republicans led in 59 of the 102 counties as they stood then and Democrats in 42. The largest, Cook, cast 2,216,469 votes and went to the Democrat by 19.4 points. The closest was Jackson, where 2 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 H. Douglas won Democratic 2,147,754 55.1%
C. Wayland Brooks Republican 1,740,026 44.6%
All other candidates 12,505 0.3%
Total3,900,285

Every county

CountyDemocratRepublicanOthersTotalMargin
Cook 1,320,819 59.6% 891,068 40.2% 4,582 2,216,469 D+19.4
St. Clair 54,761 67.5% 26,093 32.2% 240 81,094 D+35.4
Madison 41,868 65.3% 22,055 34.4% 192 64,115 D+30.9
Peoria 33,083 52.2% 30,156 47.6% 159 63,398 D+4.6
Du Page 21,593 35.0% 39,837 64.7% 188 61,618 R+29.6
Sangamon 32,966 54.2% 27,709 45.6% 110 60,785 D+8.6
Lake 26,315 43.3% 34,272 56.4% 130 60,717 R+13.1
Kane 24,083 40.4% 35,427 59.4% 172 59,682 R+19.0
Winnebago 29,436 53.0% 25,906 46.6% 246 55,588 D+6.4
Will 28,609 52.5% 25,605 46.9% 328 54,542 D+5.5
Rock Island 25,572 55.0% 20,646 44.4% 259 46,477 D+10.6
La Salle 20,223 47.3% 22,354 52.3% 143 42,720 R+5.0
Macon 23,372 59.5% 15,762 40.1% 126 39,260 D+19.4
Vermilion 16,207 47.3% 17,698 51.7% 325 34,230 R+4.4
McLean 14,535 47.6% 15,907 52.1% 97 30,539 R+4.5
Champaign 13,923 45.7% 16,319 53.6% 201 30,443 R+7.9
Adams 15,894 55.8% 12,496 43.9% 88 28,478 D+11.9
Kankakee 11,515 44.0% 14,548 55.5% 136 26,199 R+11.6
Tazewell 15,131 58.0% 10,880 41.7% 95 26,106 D+16.3
Knox 10,635 43.6% 13,656 56.0% 87 24,378 R+12.4
Macoupin 12,426 57.9% 8,969 41.8% 81 21,476 D+16.1
Henry 8,835 43.2% 11,535 56.4% 86 20,456 R+13.2
Franklin 12,139 59.4% 8,118 39.7% 184 20,441 D+19.7
McHenry 6,079 29.8% 14,309 70.0% 40 20,428 R+40.3
Williamson 10,220 52.2% 9,254 47.3% 88 19,562 D+4.9
Whiteside 5,729 31.9% 12,129 67.5% 114 17,972 R+35.6
Stephenson 8,621 48.6% 9,023 50.9% 81 17,725 R+2.3
Bureau 6,776 38.7% 10,702 61.1% 42 17,520 R+22.4
Fulton 8,582 49.1% 8,748 50.1% 146 17,476 R+0.9
Christian 9,770 59.0% 6,722 40.6% 73 16,565 D+18.4
Coles 8,599 52.2% 7,855 47.7% 28 16,482 D+4.5
De Kalb 5,676 35.0% 10,468 64.5% 77 16,221 R+29.5
Livingston 6,050 37.3% 10,119 62.4% 42 16,211 R+25.1
Marion 9,068 56.1% 6,924 42.9% 164 16,156 D+13.3
Montgomery 8,357 52.5% 7,408 46.5% 156 15,921 D+6.0
Jefferson 9,175 58.8% 6,432 41.2% 15,607 D+17.6
Jackson 7,445 49.6% 7,443 49.6% 115 15,003 level
Morgan 7,366 49.2% 7,561 50.5% 46 14,973 R+1.3
Saline 7,790 52.6% 6,958 47.0% 48 14,796 D+5.6
Iroquois 4,853 35.4% 8,751 63.9% 101 13,705 R+28.4
Randolph 7,226 54.3% 6,036 45.4% 40 13,302 D+8.9
Lee 4,645 35.2% 8,483 64.4% 54 13,182 R+29.1
Ogle 4,332 33.4% 8,614 66.4% 26 12,972 R+33.0
Hancock 5,694 45.7% 6,693 53.7% 79 12,466 R+8.0
McDonough 4,368 36.0% 7,690 63.4% 75 12,133 R+27.4
Logan 5,040 42.3% 6,849 57.5% 29 11,918 R+15.2
Fayette 5,795 51.7% 5,322 47.5% 99 11,216 D+4.2
Edgar 5,137 46.2% 5,948 53.5% 42 11,127 R+7.3
Shelby 5,810 53.8% 4,863 45.0% 122 10,795 D+8.8
Pike 5,674 56.1% 4,381 43.3% 66 10,121 D+12.8
Perry 5,430 54.4% 4,495 45.1% 51 9,976 D+9.4
Warren 3,581 36.1% 6,304 63.5% 43 9,928 R+27.4
Clinton 4,700 49.8% 4,700 49.8% 40 9,440 level
Effingham 4,829 51.6% 4,447 47.5% 80 9,356 D+4.1
Crawford 4,347 47.6% 4,718 51.6% 70 9,135 R+4.1
Woodford 3,670 40.4% 5,393 59.3% 31 9,094 R+18.9
Grundy 3,499 39.3% 5,390 60.5% 15 8,904 R+21.2
Wayne 4,183 47.2% 4,632 52.3% 42 8,857 R+5.1
White 4,766 54.0% 4,003 45.4% 56 8,825 D+8.6
Alexander 4,347 49.4% 4,360 49.6% 85 8,792 R+0.1
Lawrence 4,463 50.9% 4,164 47.5% 147 8,774 D+3.4
Jo Daviess 3,188 38.1% 5,148 61.6% 22 8,358 R+23.5
Union 4,568 55.7% 3,596 43.9% 34 8,198 D+11.9
Mercer 3,188 39.2% 4,931 60.6% 24 8,143 R+21.4
Clark 3,711 46.1% 4,267 53.0% 77 8,055 R+6.9
Carroll 2,931 37.7% 4,813 61.9% 36 7,780 R+24.2
De Witt 3,489 47.5% 3,824 52.1% 33 7,346 R+4.6
Greene 4,034 55.0% 3,273 44.6% 29 7,336 D+10.4
Cass 4,003 56.3% 3,073 43.2% 32 7,108 D+13.1
Washington 2,839 40.0% 4,230 59.6% 34 7,103 R+19.6
Douglas 2,978 43.0% 3,914 56.5% 40 6,932 R+13.5
Clay 3,204 46.5% 3,535 51.3% 155 6,894 R+4.8
Ford 2,259 32.9% 4,592 66.8% 21 6,872 R+33.9
Mason 3,554 51.8% 3,266 47.6% 40 6,860 D+4.2
Boone 2,088 30.7% 4,712 69.2% 12 6,812 R+38.5
Bond 2,939 46.3% 3,159 49.8% 245 6,343 R+3.5
Marshall 2,606 42.1% 3,578 57.8% 10 6,194 R+15.7
Richland 2,595 41.9% 3,517 56.8% 77 6,189 R+14.9
Jersey 3,198 53.6% 2,747 46.1% 17 5,962 D+7.6
Piatt 2,544 42.9% 3,346 56.4% 38 5,928 R+13.5
Moultrie 3,034 51.4% 2,802 47.4% 70 5,906 D+3.9
Jasper 2,992 51.6% 2,778 47.9% 33 5,803 D+3.7
Wabash 2,911 51.2% 2,681 47.2% 94 5,686 D+4.0
Hamilton 2,761 51.3% 2,602 48.3% 23 5,386 D+3.0
Monroe 2,120 40.0% 3,179 60.0% 1 5,300 R+20.0
Kendall 1,629 31.2% 3,583 68.6% 11 5,223 R+37.4
Schuyler 2,495 49.7% 2,447 48.8% 76 5,018 D+1.0
Massac 1,858 37.6% 3,026 61.2% 61 4,945 R+23.6
Menard 2,086 43.2% 2,728 56.5% 12 4,826 R+13.3
Pulaski 2,151 45.7% 2,532 53.8% 23 4,706 R+8.1
Cumberland 2,339 49.7% 2,344 49.9% 19 4,702 R+0.1
Johnson 1,511 36.1% 2,664 63.6% 14 4,189 R+27.5
Gallatin 2,333 58.2% 1,652 41.2% 21 4,006 D+17.0
Henderson 1,479 40.1% 2,183 59.2% 27 3,689 R+19.1
Edwards 1,212 33.4% 2,362 65.1% 56 3,630 R+31.7
Stark 1,187 33.0% 2,409 66.9% 3 3,599 R+34.0
Scott 1,758 50.7% 1,701 49.0% 11 3,470 D+1.6
Brown 1,816 56.2% 1,404 43.4% 12 3,232 D+12.7
Hardin 1,366 45.1% 1,650 54.5% 12 3,028 R+9.4
Calhoun 1,286 46.7% 1,455 52.8% 15 2,756 R+6.1
Pope 914 34.7% 1,704 64.8% 13 2,631 R+30.0
Putnam 968 42.2% 1,312 57.2% 14 2,294 R+15.0

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 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