Illinois — 1948 presidential election
Recent presidential results
Akashicstate1948 presidential electionIllinois · PresidentTrumanD+0.8
How it voted
Share of the 1948 vote
| Harry S. Truman ✓Democratic | 50.1% | 1,994,715 |
|---|---|---|
| Thomas E. DeweyRepublican | 49.2% | 1,961,103 |
| OtherAll other candidates | 0.7% | 28,228 |
1948presidential margin
D+60R+60
102 counties, each filled by 1948 D-vs-R margin. Hover any county for its result.
Illinois cast 28 electoral votes this cycle.
County-level results (102 counties) — table
| County | Winner | Margin |
|---|---|---|
| Adams County, IL | Democratic | D+2.1 |
| Alexander County, IL | Democratic | D+0.9 |
| Bond County, IL | Republican | R+9.3 |
| Boone County, IL | Republican | R+43.2 |
| Brown County, IL | Democratic | D+7.2 |
| Bureau County, IL | Republican | R+26.7 |
| Calhoun County, IL | Republican | R+5.1 |
| Carroll County, IL | Republican | R+30.6 |
| Cass County, IL | Democratic | D+5.3 |
| Champaign County, IL | Republican | R+24.1 |
| Christian County, IL | Democratic | D+10.5 |
| Clark County, IL | Republican | R+9.2 |
| Clay County, IL | Republican | R+8.8 |
| Clinton County, IL | Republican | R+3.6 |
| Coles County, IL | Republican | R+1.4 |
| Cook County, IL | Democratic | D+8.9 |
| Crawford County, IL | Republican | R+10.3 |
| Cumberland County, IL | Republican | R+2.0 |
| De Witt County, IL | Republican | R+11.8 |
| DeKalb County, IL | Republican | R+38.0 |
| Douglas County, IL | Republican | R+18.1 |
| DuPage County, IL | Republican | R+48.6 |
| Edgar County, IL | Republican | R+10.1 |
| Edwards County, IL | Republican | R+34.1 |
| Effingham County, IL | Democratic | D+1.2 |
| Fayette County, IL | Democratic | D+0.5 |
| Ford County, IL | Republican | R+40.3 |
| Franklin County, IL | Democratic | D+10.9 |
| Fulton County, IL | Republican | R+7.1 |
| Gallatin County, IL | Democratic | D+14.2 |
| Greene County, IL | Democratic | D+5.1 |
| Grundy County, IL | Republican | R+29.2 |
| Hamilton County, IL | Republican | R+2.4 |
| Hancock County, IL | Republican | R+12.0 |
| Hardin County, IL | Republican | R+11.5 |
| Henderson County, IL | Republican | R+22.7 |
| Henry County, IL | Republican | R+18.4 |
| Iroquois County, IL | Republican | R+30.2 |
| Jackson County, IL | Republican | R+8.8 |
| Jasper County, IL | Republican | R+0.4 |
| Jefferson County, IL | Democratic | D+9.4 |
| Jersey County, IL | Democratic | D+1.2 |
| Jo Daviess County, IL | Republican | R+24.3 |
| Johnson County, IL | Republican | R+29.4 |
| Kane County, IL | Republican | R+29.7 |
| Kankakee County, IL | Republican | R+16.2 |
| Kendall County, IL | Republican | R+44.0 |
| Knox County, IL | Republican | R+21.0 |
| Lake County, IL | Republican | R+27.7 |
| LaSalle County, IL | Republican | R+10.8 |
| Lawrence County, IL | Republican | R+0.9 |
| Lee County, IL | Republican | R+34.5 |
| Livingston County, IL | Republican | R+33.0 |
| Logan County, IL | Republican | R+21.1 |
| Macon County, IL | Democratic | D+6.8 |
| Macoupin County, IL | Democratic | D+6.9 |
| Madison County, IL | Democratic | D+23.9 |
| Marion County, IL | Democratic | D+6.4 |
| Marshall County, IL | Republican | R+20.1 |
| Mason County, IL | Republican | R+0.3 |
| Massac County, IL | Republican | R+26.5 |
| McDonough County, IL | Republican | R+31.1 |
| McHenry County, IL | Republican | R+47.4 |
| McLean County, IL | Republican | R+17.5 |
| Menard County, IL | Republican | R+17.2 |
| Mercer County, IL | Republican | R+25.5 |
| Monroe County, IL | Republican | R+25.3 |
| Montgomery County, IL | Republican | R+2.7 |
| Morgan County, IL | Republican | R+10.5 |
| Moultrie County, IL | Republican | R+0.1 |
| Ogle County, IL | Republican | R+42.8 |
| Peoria County, IL | Republican | R+6.0 |
| Perry County, IL | Republican | R+0.6 |
| Piatt County, IL | Republican | R+21.2 |
| Pike County, IL | Democratic | D+9.1 |
| Pope County, IL | Republican | R+31.5 |
| Pulaski County, IL | Republican | R+6.2 |
| Putnam County, IL | Republican | R+21.4 |
| Randolph County, IL | Republican | R+0.1 |
| Richland County, IL | Republican | R+22.5 |
| Rock Island County, IL | Democratic | D+5.0 |
| Saline County, IL | Democratic | D+0.3 |
| Sangamon County, IL | Republican | R+7.1 |
| Schuyler County, IL | Republican | R+1.1 |
| Scott County, IL | Republican | R+2.9 |
| Shelby County, IL | Democratic | D+2.8 |
| St. Clair County, IL | Democratic | D+27.3 |
| Stark County, IL | Republican | R+37.1 |
| Stephenson County, IL | Republican | R+17.4 |
| Tazewell County, IL | Democratic | D+6.1 |
| Union County, IL | Democratic | D+7.3 |
| Vermilion County, IL | Republican | R+7.9 |
| Wabash County, IL | Republican | R+1.0 |
| Warren County, IL | Republican | R+33.1 |
| Washington County, IL | Republican | R+24.7 |
| Wayne County, IL | Republican | R+10.0 |
| White County, IL | Democratic | D+2.8 |
| Whiteside County, IL | Republican | R+41.5 |
| Will County, IL | Republican | R+3.9 |
| Williamson County, IL | Republican | R+2.7 |
| Winnebago County, IL | Republican | R+4.2 |
| Woodford County, IL | Republican | R+25.2 |
Illinois results by county
102 counties. Third-party and independent votes are reported by the county source as one combined figure; every named candidate is listed in the complete result below.
| Led by | |||||
|---|---|---|---|---|---|
| Adams County | Harry S. Truman+631 | 14,96050.8% | 14,32948.7% | 1520.5% | 29,441 |
| Alexander County | Harry S. Truman+80 | 4,64149.9% | 4,56149.1% | 961.0% | 9,298 |
| Bond County | Thomas E. Dewey+601 | 2,83743.8% | 3,43853.0% | 2083.2% | 6,483 |
| Boone County | Thomas E. Dewey+2,975 | 1,94128.2% | 4,91671.4% | 250.4% | 6,882 |
| Brown County | Harry S. Truman+243 | 1,80553.3% | 1,56246.1% | 220.6% | 3,389 |
| Bureau County | Thomas E. Dewey+4,744 | 6,46336.4% | 11,20763.1% | 780.4% | 17,748 |
| Calhoun County | Thomas E. Dewey+149 | 1,37747.1% | 1,52652.2% | 200.7% | 2,923 |
| Carroll County | Thomas E. Dewey+2,509 | 2,80934.3% | 5,31864.9% | 620.8% | 8,189 |
| Cass County | Harry S. Truman+385 | 3,77652.3% | 3,39147.0% | 500.7% | 7,217 |
| Champaign County | Thomas E. Dewey+7,584 | 11,57236.8% | 19,15660.9% | 7372.3% | 31,465 |
| Christian County | Harry S. Truman+1,790 | 9,36654.9% | 7,57644.4% | 1200.7% | 17,062 |
| Clark County | Thomas E. Dewey+763 | 3,71444.7% | 4,47753.9% | 1121.3% | 8,303 |
| Clay County | Thomas E. Dewey+622 | 3,16044.5% | 3,78253.2% | 1662.3% | 7,108 |
| Clinton County | Thomas E. Dewey+355 | 4,77347.9% | 5,12851.5% | 620.6% | 9,963 |
| Coles County | Thomas E. Dewey+245 | 8,39349.1% | 8,63850.6% | 530.3% | 17,084 |
| Cook County | Harry S. Truman+200,836 | 1,216,63654.2% | 1,015,80045.2% | 13,4630.6% | 2,245,899 |
| Crawford County | Thomas E. Dewey+961 | 4,15044.3% | 5,11154.6% | 1031.1% | 9,364 |
| Cumberland County | Thomas E. Dewey+98 | 2,35348.7% | 2,45150.7% | 280.6% | 4,832 |
| De Witt County | Thomas E. Dewey+888 | 3,29043.8% | 4,17855.6% | 450.6% | 7,513 |
| DeKalb County | Thomas E. Dewey+6,298 | 5,08230.7% | 11,38068.7% | 1050.6% | 16,567 |
| Douglas County | Thomas E. Dewey+1,288 | 2,89340.6% | 4,18158.6% | 550.8% | 7,129 |
| DuPage County | Thomas E. Dewey+30,266 | 15,52824.9% | 45,79473.6% | 9161.5% | 62,238 |
| Edgar County | Thomas E. Dewey+1,161 | 5,12144.6% | 6,28254.8% | 670.6% | 11,470 |
| Edwards County | Thomas E. Dewey+1,285 | 1,20632.0% | 2,49166.1% | 731.9% | 3,770 |
| Effingham County | Harry S. Truman+117 | 4,94050.1% | 4,82348.9% | 961.0% | 9,859 |
| Fayette County | Harry S. Truman+54 | 5,77149.7% | 5,71749.3% | 1201.0% | 11,608 |
| Ford County | Thomas E. Dewey+2,824 | 2,07929.6% | 4,90369.9% | 330.5% | 7,015 |
| Franklin County | Harry S. Truman+2,343 | 11,75054.8% | 9,40743.9% | 2871.3% | 21,444 |
| Fulton County | Thomas E. Dewey+1,278 | 8,22645.9% | 9,50453.0% | 2031.1% | 17,933 |
| Gallatin County | Harry S. Truman+596 | 2,38556.8% | 1,78942.6% | 260.6% | 4,200 |
| Greene County | Harry S. Truman+396 | 4,03552.2% | 3,63947.1% | 530.7% | 7,727 |
| Grundy County | Thomas E. Dewey+2,699 | 3,25535.2% | 5,95464.4% | 310.3% | 9,240 |
| Hamilton County | Thomas E. Dewey+137 | 2,75048.5% | 2,88750.9% | 320.6% | 5,669 |
| Hancock County | Thomas E. Dewey+1,539 | 5,55943.5% | 7,09855.5% | 1221.0% | 12,779 |
| Hardin County | Thomas E. Dewey+355 | 1,35844.0% | 1,71355.5% | 160.5% | 3,087 |
| Henderson County | Thomas E. Dewey+871 | 1,46538.2% | 2,33660.9% | 371.0% | 3,838 |
| Henry County | Thomas E. Dewey+3,874 | 8,48940.4% | 12,36358.8% | 1590.8% | 21,011 |
| Iroquois County | Thomas E. Dewey+4,228 | 4,82334.4% | 9,05164.6% | 1270.9% | 14,001 |
| Jackson County | Thomas E. Dewey+1,349 | 6,93945.0% | 8,28853.8% | 1811.2% | 15,408 |
| Jasper County | Thomas E. Dewey+21 | 2,93649.4% | 2,95749.8% | 500.8% | 5,943 |
| Jefferson County | Harry S. Truman+1,535 | 8,92854.7% | 7,39345.3% | 00.0% | 16,321 |
| Jersey County | Harry S. Truman+71 | 3,09250.4% | 3,02149.2% | 260.4% | 6,139 |
| Jo Daviess County | Thomas E. Dewey+2,079 | 3,22037.6% | 5,29961.8% | 510.6% | 8,570 |
| Johnson County | Thomas E. Dewey+1,268 | 1,51035.0% | 2,77864.5% | 210.5% | 4,309 |
| Kane County | Thomas E. Dewey+18,108 | 21,17634.7% | 39,28464.4% | 5320.9% | 60,992 |
| Kankakee County | Thomas E. Dewey+4,394 | 11,30541.6% | 15,69957.7% | 1970.7% | 27,201 |
| Kendall County | Thomas E. Dewey+2,408 | 1,51727.7% | 3,92571.8% | 270.5% | 5,469 |
| Knox County | Thomas E. Dewey+5,244 | 9,77239.2% | 15,01660.2% | 1640.7% | 24,952 |
| Lake County | Thomas E. Dewey+17,264 | 22,19235.6% | 39,45663.3% | 7201.2% | 62,368 |
| LaSalle County | Thomas E. Dewey+4,787 | 19,66644.3% | 24,45355.0% | 3210.7% | 44,440 |
| Lawrence County | Thomas E. Dewey+81 | 4,39148.5% | 4,47249.4% | 1942.1% | 9,057 |
| Lee County | Thomas E. Dewey+4,633 | 4,36832.5% | 9,00167.0% | 720.5% | 13,441 |
| Livingston County | Thomas E. Dewey+5,566 | 5,61833.3% | 11,18466.3% | 740.4% | 16,876 |
| Logan County | Thomas E. Dewey+2,599 | 4,83239.2% | 7,43160.4% | 490.4% | 12,312 |
| Macon County | Harry S. Truman+2,768 | 21,48753.1% | 18,71946.3% | 2500.6% | 40,456 |
| Macoupin County | Harry S. Truman+1,544 | 11,74252.7% | 10,19845.7% | 3581.6% | 22,298 |
| Madison County | Harry S. Truman+15,838 | 40,89761.7% | 25,05937.8% | 3500.5% | 66,306 |
| Marion County | Harry S. Truman+1,080 | 8,87852.6% | 7,79846.2% | 2081.2% | 16,884 |
| Marshall County | Thomas E. Dewey+1,271 | 2,51439.8% | 3,78559.9% | 190.3% | 6,318 |
| Mason County | Thomas E. Dewey+22 | 3,50349.5% | 3,52549.8% | 460.7% | 7,074 |
| Massac County | Thomas E. Dewey+1,359 | 1,84235.9% | 3,20162.5% | 821.6% | 5,125 |
| McDonough County | Thomas E. Dewey+3,852 | 4,20634.0% | 8,05865.1% | 1090.9% | 12,373 |
| McHenry County | Thomas E. Dewey+9,928 | 5,45926.1% | 15,38773.4% | 1030.5% | 20,949 |
| McLean County | Thomas E. Dewey+5,526 | 12,90440.9% | 18,43058.5% | 1830.6% | 31,517 |
| Menard County | Thomas E. Dewey+856 | 2,04341.1% | 2,89958.4% | 260.5% | 4,968 |
| Mercer County | Thomas E. Dewey+2,150 | 3,11737.0% | 5,26762.6% | 360.4% | 8,420 |
| Monroe County | Thomas E. Dewey+1,377 | 2,02637.3% | 3,40362.6% | 30.1% | 5,432 |
| Montgomery County | Thomas E. Dewey+446 | 7,90248.0% | 8,34850.7% | 2051.2% | 16,455 |
| Morgan County | Thomas E. Dewey+1,600 | 6,79844.6% | 8,39855.1% | 590.4% | 15,255 |
| Moultrie County | Thomas E. Dewey+6 | 3,03749.3% | 3,04349.4% | 811.3% | 6,161 |
| Ogle County | Thomas E. Dewey+5,723 | 3,79628.4% | 9,51971.2% | 630.5% | 13,378 |
| Peoria County | Thomas E. Dewey+3,992 | 31,02646.8% | 35,01852.8% | 3080.5% | 66,352 |
| Perry County | Thomas E. Dewey+66 | 5,04349.3% | 5,10950.0% | 740.7% | 10,226 |
| Piatt County | Thomas E. Dewey+1,285 | 2,36138.9% | 3,64660.1% | 570.9% | 6,064 |
| Pike County | Harry S. Truman+952 | 5,67454.1% | 4,72245.0% | 980.9% | 10,494 |
| Pope County | Thomas E. Dewey+848 | 91634.0% | 1,76465.4% | 160.6% | 2,696 |
| Pulaski County | Thomas E. Dewey+314 | 2,34446.6% | 2,65852.8% | 310.6% | 5,033 |
| Putnam County | Thomas E. Dewey+500 | 90538.7% | 1,40560.1% | 261.1% | 2,336 |
| Randolph County | Thomas E. Dewey+15 | 6,85249.7% | 6,86749.8% | 620.4% | 13,781 |
| Richland County | Thomas E. Dewey+1,446 | 2,43838.0% | 3,88460.6% | 911.4% | 6,413 |
| Rock Island County | Harry S. Truman+2,350 | 24,54252.0% | 22,19247.0% | 4771.0% | 47,211 |
| Saline County | Harry S. Truman+42 | 7,71849.8% | 7,67649.6% | 910.6% | 15,485 |
| Sangamon County | Thomas E. Dewey+4,518 | 29,19646.1% | 33,71453.3% | 3630.6% | 63,273 |
| Schuyler County | Thomas E. Dewey+55 | 2,46448.6% | 2,51949.6% | 911.8% | 5,074 |
| Scott County | Thomas E. Dewey+105 | 1,73548.4% | 1,84051.3% | 130.4% | 3,588 |
| Shelby County | Harry S. Truman+307 | 5,58950.7% | 5,28247.9% | 1581.4% | 11,029 |
| St. Clair County | Harry S. Truman+23,377 | 54,26063.4% | 30,88336.1% | 4740.6% | 85,617 |
| Stark County | Thomas E. Dewey+1,374 | 1,16331.4% | 2,53768.4% | 70.2% | 3,707 |
| Stephenson County | Thomas E. Dewey+3,155 | 7,40940.9% | 10,56458.3% | 1490.8% | 18,122 |
| Tazewell County | Harry S. Truman+1,627 | 14,13152.8% | 12,50446.7% | 1430.5% | 26,778 |
| Union County | Harry S. Truman+615 | 4,47953.3% | 3,86446.0% | 550.7% | 8,398 |
| Vermilion County | Thomas E. Dewey+2,821 | 16,17345.4% | 18,99453.3% | 4791.3% | 35,646 |
| Wabash County | Thomas E. Dewey+59 | 2,85748.4% | 2,91649.4% | 1252.1% | 5,898 |
| Warren County | Thomas E. Dewey+3,371 | 3,36733.1% | 6,73866.2% | 740.7% | 10,179 |
| Washington County | Thomas E. Dewey+1,807 | 2,73737.3% | 4,54462.0% | 490.7% | 7,330 |
| Wayne County | Thomas E. Dewey+914 | 4,07044.7% | 4,98454.7% | 600.7% | 9,114 |
| White County | Harry S. Truman+263 | 4,76151.0% | 4,49848.2% | 790.8% | 9,338 |
| Whiteside County | Thomas E. Dewey+7,623 | 5,29928.8% | 12,92270.3% | 1540.8% | 18,375 |
| Will County | Thomas E. Dewey+2,171 | 26,43047.5% | 28,60151.4% | 5971.1% | 55,628 |
| Williamson County | Thomas E. Dewey+545 | 9,84148.3% | 10,38651.0% | 1300.6% | 20,357 |
| Winnebago County | Thomas E. Dewey+2,392 | 27,14547.4% | 29,53751.5% | 6311.1% | 57,313 |
| Woodford County | Thomas E. Dewey+2,338 | 3,44637.1% | 5,78462.4% | 460.5% | 9,276 |
Nominees: Harry S. Truman (D) · Thomas E. Dewey (R) · Strom Thurmond (States' Rights Democratic)
Illinois's presidential margins
1892–2024, the 1948 contest in context
| Year | Margin (D minus R) |
|---|---|
| 1892 | +3.1% |
| 1896 | −13.0% |
| 1900 | −8.4% |
| 1904 | −28.3% |
| 1908 | −15.5% |
| 1912 | +13.2% |
| 1916 | −9.2% |
| 1920 | −42.3% |
| 1924 | −35.5% |
| 1928 | −14.7% |
| 1932 | +13.2% |
| 1936 | +18.0% |
| 1940 | +2.4% |
| 1944 | +3.5% |
| 1948 | +0.8% |
| 1952 | −9.9% |
| 1956 | −19.2% |
| 1960 | +0.2% |
| 1964 | +18.9% |
| 1968 | −2.9% |
| 1972 | −18.5% |
| 1976 | −2.0% |
| 1980 | −7.9% |
| 1984 | −12.9% |
| 1988 | −2.1% |
| 1992 | +14.2% |
| 1996 | +17.5% |
| 2000 | +12.0% |
| 2004 | +10.3% |
| 2008 | +25.1% |
| 2012 | +16.8% |
| 2016 | +16.9% |
| 2020 | +16.9% |
| 2024 | +10.9% |
Source. Compiled historical county records — 1948 presidential returns · official county-level results. Real returns — nothing estimated.