Elections / 1984 · President · IL
Illinois — 1984 presidential election
Recent presidential results
Akashicstate1984 presidential electionIllinois · PresidentReaganR+12.9
How it voted
Share of the 1984 vote
| Ronald Reagan ✓Republican | 56.2% | 2,707,103 |
|---|---|---|
| Walter MondaleDemocratic | 43.3% | 2,086,499 |
| OtherAll other candidates | 0.5% | 25,486 |
1984presidential margin
D+60R+60
102 counties, each filled by 1984 D-vs-R margin. Hover any county for its result.
Illinois cast 24 electoral votes this cycle.
County-level results (102 counties) — table
| County | Winner | Margin |
|---|---|---|
| Adams County, IL | Republican | R+32.3 |
| Alexander County, IL | Democratic | D+5.5 |
| Bond County, IL | Republican | R+19.2 |
| Boone County, IL | Republican | R+33.8 |
| Brown County, IL | Republican | R+21.2 |
| Bureau County, IL | Republican | R+25.7 |
| Calhoun County, IL | Republican | R+6.6 |
| Carroll County, IL | Republican | R+37.1 |
| Cass County, IL | Republican | R+7.8 |
| Champaign County, IL | Republican | R+17.9 |
| Christian County, IL | Republican | R+6.1 |
| Clark County, IL | Republican | R+27.3 |
| Clay County, IL | Republican | R+28.7 |
| Clinton County, IL | Republican | R+33.1 |
| Coles County, IL | Republican | R+32.3 |
| Cook County, IL | Democratic | D+2.6 |
| Crawford County, IL | Republican | R+33.2 |
| Cumberland County, IL | Republican | R+26.6 |
| De Witt County, IL | Republican | R+31.6 |
| DeKalb County, IL | Republican | R+29.7 |
| Douglas County, IL | Republican | R+32.6 |
| DuPage County, IL | Republican | R+51.9 |
| Edgar County, IL | Republican | R+35.4 |
| Edwards County, IL | Republican | R+44.8 |
| Effingham County, IL | Republican | R+42.8 |
| Fayette County, IL | Republican | R+26.4 |
| Ford County, IL | Republican | R+46.6 |
| Franklin County, IL | Democratic | D+5.0 |
| Fulton County, IL | Republican | R+0.1 |
| Gallatin County, IL | Democratic | D+5.5 |
| Greene County, IL | Republican | R+22.4 |
| Grundy County, IL | Republican | R+34.4 |
| Hamilton County, IL | Republican | R+15.4 |
| Hancock County, IL | Republican | R+25.4 |
| Hardin County, IL | Republican | R+16.7 |
| Henderson County, IL | Republican | R+7.5 |
| Henry County, IL | Republican | R+15.1 |
| Iroquois County, IL | Republican | R+54.7 |
| Jackson County, IL | Republican | R+5.8 |
| Jasper County, IL | Republican | R+35.3 |
| Jefferson County, IL | Republican | R+14.5 |
| Jersey County, IL | Republican | R+15.5 |
| Jo Daviess County, IL | Republican | R+27.2 |
| Johnson County, IL | Republican | R+35.0 |
| Kane County, IL | Republican | R+38.8 |
| Kankakee County, IL | Republican | R+21.6 |
| Kendall County, IL | Republican | R+48.1 |
| Knox County, IL | Republican | R+10.9 |
| Lake County, IL | Republican | R+37.2 |
| LaSalle County, IL | Republican | R+14.2 |
| Lawrence County, IL | Republican | R+23.1 |
| Lee County, IL | Republican | R+47.9 |
| Livingston County, IL | Republican | R+45.7 |
| Logan County, IL | Republican | R+41.9 |
| Macon County, IL | Republican | R+8.9 |
| Macoupin County, IL | Republican | R+7.3 |
| Madison County, IL | Republican | R+8.2 |
| Marion County, IL | Republican | R+19.5 |
| Marshall County, IL | Republican | R+25.8 |
| Mason County, IL | Republican | R+10.1 |
| Massac County, IL | Republican | R+9.0 |
| McDonough County, IL | Republican | R+34.4 |
| McHenry County, IL | Republican | R+53.0 |
| McLean County, IL | Republican | R+33.8 |
| Menard County, IL | Republican | R+36.4 |
| Mercer County, IL | Republican | R+10.4 |
| Monroe County, IL | Republican | R+36.0 |
| Montgomery County, IL | Republican | R+12.5 |
| Morgan County, IL | Republican | R+33.1 |
| Moultrie County, IL | Republican | R+18.7 |
| Ogle County, IL | Republican | R+47.3 |
| Peoria County, IL | Republican | R+10.6 |
| Perry County, IL | Republican | R+12.1 |
| Piatt County, IL | Republican | R+27.4 |
| Pike County, IL | Republican | R+14.3 |
| Pope County, IL | Republican | R+24.3 |
| Pulaski County, IL | Republican | R+5.4 |
| Putnam County, IL | Republican | R+12.5 |
| Randolph County, IL | Republican | R+19.3 |
| Richland County, IL | Republican | R+44.2 |
| Rock Island County, IL | Democratic | D+6.7 |
| Saline County, IL | Republican | R+8.6 |
| Sangamon County, IL | Republican | R+22.6 |
| Schuyler County, IL | Republican | R+24.2 |
| Scott County, IL | Republican | R+35.2 |
| Shelby County, IL | Republican | R+19.2 |
| St. Clair County, IL | Democratic | D+1.2 |
| Stark County, IL | Republican | R+34.8 |
| Stephenson County, IL | Republican | R+35.6 |
| Tazewell County, IL | Republican | R+18.7 |
| Union County, IL | Republican | R+10.6 |
| Vermilion County, IL | Republican | R+16.2 |
| Wabash County, IL | Republican | R+33.8 |
| Warren County, IL | Republican | R+27.5 |
| Washington County, IL | Republican | R+36.8 |
| Wayne County, IL | Republican | R+41.1 |
| White County, IL | Republican | R+22.7 |
| Whiteside County, IL | Republican | R+19.6 |
| Will County, IL | Republican | R+26.9 |
| Williamson County, IL | Republican | R+12.5 |
| Winnebago County, IL | Republican | R+17.9 |
| Woodford County, IL | Republican | R+41.5 |
complete certified result
Illinois candidate results
Top three shown first · expand for every reported candidate and write-in category
Source: MIT Election Data + Science Lab — U.S. President 1976–2024 state candidate returns
Nominees: Walter Mondale (D) · Ronald Reagan (R)
Illinois's presidential margins
1892–2024, the 1984 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% |
County-by-county results — 102 counties
| County | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| Adams County | R | 10,336 | 20,225 | 30,649 | |
| Alexander County | D | 2,872 | 2,574 | 5,467 | |
| Bond County | R | 2,870 | 4,240 | 7,131 | |
| Boone County | R | 3,717 | 7,536 | 11,306 | |
| Brown County | R | 959 | 1,478 | 2,446 | |
| Bureau County | R | 6,925 | 11,741 | 18,765 | |
| Calhoun County | R | 1,443 | 1,648 | 3,107 | |
| Carroll County | R | 2,398 | 5,237 | 7,658 | |
| Cass County | R | 2,937 | 3,435 | 6,399 | |
| Champaign County | R | 27,266 | 39,224 | 66,925 | |
| Christian County | R | 7,541 | 8,534 | 16,152 | |
| Clark County | R | 3,032 | 5,318 | 8,382 | |
| Clay County | R | 2,524 | 4,562 | 7,104 | |
| Clinton County | R | 4,628 | 9,233 | 13,899 | |
| Coles County | R | 7,156 | 14,044 | 21,295 | |
| Cook County | D | 1,112,641 | 1,055,558 | 2,180,735 | |
| Crawford County | R | 3,130 | 6,261 | 9,424 | |
| Cumberland County | R | 1,733 | 3,002 | 4,762 | |
| De Witt County | R | 2,352 | 4,534 | 6,915 | |
| DeKalb County | R | 10,942 | 20,294 | 31,465 | |
| Douglas County | R | 2,886 | 5,691 | 8,604 | |
| DuPage County | R | 71,430 | 227,141 | 300,215 | |
| Edgar County | R | 3,241 | 6,821 | 10,099 | |
| Edwards County | R | 1,057 | 2,778 | 3,845 | |
| Effingham County | R | 3,841 | 9,617 | 13,504 | |
| Fayette County | R | 3,844 | 6,607 | 10,473 | |
| Ford County | R | 1,763 | 4,871 | 6,663 | |
| Franklin County | D | 10,667 | 9,656 | 20,377 | |
| Fulton County | R | 9,131 | 9,147 | 18,377 | |
| Gallatin County | D | 2,164 | 1,939 | 4,112 | |
| Greene County | R | 2,563 | 4,057 | 6,655 | |
| Grundy County | R | 4,671 | 9,595 | 14,325 | |
| Hamilton County | R | 2,251 | 3,074 | 5,346 | |
| Hancock County | R | 3,713 | 6,251 | 10,001 | |
| Hardin County | R | 1,205 | 1,689 | 2,899 | |
| Henderson County | R | 1,969 | 2,289 | 4,278 | |
| Henry County | R | 10,679 | 14,504 | 25,262 | |
| Iroquois County | R | 3,300 | 11,327 | 14,685 | |
| Jackson County | R | 12,105 | 13,609 | 25,896 | |
| Jasper County | R | 1,750 | 3,673 | 5,454 | |
| Jefferson County | R | 7,200 | 9,642 | 16,885 | |
| Jersey County | R | 3,762 | 5,146 | 8,934 | |
| Jo Daviess County | R | 3,348 | 5,877 | 9,302 | |
| Johnson County | R | 1,647 | 3,424 | 5,083 | |
| Kane County | R | 31,875 | 72,655 | 105,159 | |
| Kankakee County | R | 15,246 | 23,807 | 39,665 | |
| Kendall County | R | 3,789 | 10,872 | 14,730 | |
| Knox County | R | 12,027 | 14,974 | 27,122 | |
| Lake County | R | 53,947 | 118,401 | 173,224 | |
| LaSalle County | R | 20,532 | 27,388 | 48,139 | |
| Lawrence County | R | 2,924 | 4,686 | 7,638 | |
| Lee County | R | 3,919 | 11,178 | 15,155 | |
| Livingston County | R | 4,567 | 12,291 | 16,919 | |
| Logan County | R | 4,052 | 9,932 | 14,046 | |
| Macon County | R | 25,463 | 30,457 | 56,112 | |
| Macoupin County | R | 10,602 | 12,282 | 22,953 | |
| Madison County | R | 48,352 | 57,021 | 105,713 | |
| Marion County | R | 7,599 | 11,300 | 18,945 | |
| Marshall County | R | 2,386 | 4,060 | 6,493 | |
| Mason County | R | 3,354 | 4,109 | 7,486 | |
| Massac County | R | 3,194 | 3,827 | 7,049 | |
| McDonough County | R | 4,561 | 9,383 | 14,001 | |
| McHenry County | R | 14,420 | 47,282 | 62,042 | |
| McLean County | R | 15,880 | 32,221 | 48,349 | |
| Menard County | R | 1,826 | 3,925 | 5,766 | |
| Mercer County | R | 3,982 | 4,907 | 8,927 | |
| Monroe County | R | 3,256 | 6,936 | 10,217 | |
| Montgomery County | R | 6,360 | 8,191 | 14,605 | |
| Morgan County | R | 5,361 | 10,683 | 16,097 | |
| Moultrie County | R | 2,458 | 3,593 | 6,072 | |
| Ogle County | R | 4,803 | 13,503 | 18,396 | |
| Peoria County | R | 36,830 | 45,607 | 82,899 | |
| Perry County | R | 4,584 | 5,852 | 10,472 | |
| Piatt County | R | 2,840 | 5,000 | 7,879 | |
| Pike County | R | 3,965 | 5,295 | 9,285 | |
| Pope County | R | 940 | 1,545 | 2,492 | |
| Pulaski County | R | 1,724 | 1,923 | 3,664 | |
| Putnam County | R | 1,487 | 1,912 | 3,413 | |
| Randolph County | R | 6,355 | 9,415 | 15,829 | |
| Richland County | R | 2,182 | 5,665 | 7,874 | |
| Rock Island County | D | 40,208 | 35,121 | 75,672 | |
| Saline County | R | 6,038 | 7,176 | 13,251 | |
| Sangamon County | R | 34,059 | 54,086 | 88,523 | |
| Schuyler County | R | 1,533 | 2,515 | 4,061 | |
| Scott County | R | 943 | 1,976 | 2,935 | |
| Shelby County | R | 4,317 | 6,372 | 10,730 | |
| St. Clair County | D | 52,294 | 51,046 | 104,148 | |
| Stark County | R | 1,072 | 2,228 | 3,318 | |
| Stephenson County | R | 6,723 | 14,237 | 21,131 | |
| Tazewell County | R | 23,095 | 33,782 | 57,115 | |
| Union County | R | 3,815 | 4,721 | 8,564 | |
| Vermilion County | R | 16,530 | 22,932 | 39,611 | |
| Wabash County | R | 1,795 | 3,639 | 5,453 | |
| Warren County | R | 3,318 | 5,846 | 9,193 | |
| Washington County | R | 2,363 | 5,129 | 7,516 | |
| Wayne County | R | 2,621 | 6,298 | 8,951 | |
| White County | R | 3,457 | 5,500 | 8,983 | |
| Whiteside County | R | 11,226 | 16,743 | 28,096 | |
| Will County | R | 45,193 | 78,684 | 124,397 | |
| Williamson County | R | 11,614 | 14,930 | 26,630 | |
| Winnebago County | R | 44,629 | 64,203 | 109,451 | |
| Woodford County | R | 4,425 | 10,758 | 15,272 |
Same ballot, 1984IL
Source. MIT Election Data + Science Lab — 1984 presidential returns · official county-level results. Real returns — nothing estimated.