Illinois 2012 vs 2020: county swing
90 of 102 counties moved toward the Republican ticket; 13 changed hands.
| County | 2012 | 2020 | Swing | Votes 2012 | Votes 2020 |
|---|---|---|---|---|---|
| Henderson County flipped | D+12.2 | R+33.0 | R+45.2 | 3,568 | 3,656 |
| Calhoun County | R+14.0 | R+49.4 | R+35.4 | 2,576 | 2,773 |
| Schuyler County | R+8.8 | R+43.5 | R+34.7 | 3,890 | 3,918 |
| Gallatin County | R+18.0 | R+52.2 | R+34.2 | 2,573 | 2,675 |
| Mason County | R+6.4 | R+39.5 | R+33.1 | 6,272 | 6,766 |
| Randolph County | R+17.6 | R+50.2 | R+32.6 | 14,392 | 14,910 |
| Mercer County flipped | D+7.4 | R+24.0 | R+31.4 | 8,534 | 8,914 |
| Fulton County flipped | D+11.0 | R+20.1 | R+31.1 | 15,356 | 16,724 |
| Hancock County | R+17.8 | R+48.9 | R+31.1 | 9,111 | 9,383 |
| Carroll County flipped | D+1.5 | R+29.4 | R+30.9 | 7,386 | 8,024 |
| Franklin County | R+16.8 | R+47.5 | R+30.7 | 17,914 | 18,669 |
| Scott County | R+26.5 | R+56.2 | R+29.7 | 2,555 | 2,741 |
| Greene County | R+25.4 | R+54.9 | R+29.5 | 5,622 | 6,227 |
| Macoupin County | R+7.1 | R+36.5 | R+29.4 | 21,010 | 24,070 |
| Perry County | R+17.7 | R+46.7 | R+29.0 | 9,549 | 10,071 |
| Alexander County flipped | D+13.6 | R+14.2 | R+27.8 | 3,501 | 2,625 |
| Hamilton County | R+32.9 | R+60.3 | R+27.4 | 3,941 | 4,323 |
| Marion County | R+19.2 | R+46.6 | R+27.4 | 15,764 | 17,492 |
| Fayette County | R+34.5 | R+61.8 | R+27.3 | 8,971 | 10,076 |
| Montgomery County | R+14.1 | R+41.0 | R+26.9 | 12,133 | 13,761 |
| Brown County | R+30.7 | R+57.3 | R+26.6 | 2,364 | 2,525 |
| Bond County | R+14.6 | R+41.0 | R+26.4 | 7,336 | 8,144 |
| Whiteside County flipped | D+17.5 | R+8.3 | R+25.8 | 25,654 | 27,375 |
| Pike County | R+35.4 | R+60.9 | R+25.5 | 7,286 | 7,965 |
| Warren County flipped | D+5.5 | R+20.0 | R+25.5 | 7,793 | 7,924 |
| Pulaski County | R+5.8 | R+30.7 | R+24.9 | 3,003 | 2,631 |
| Stark County | R+16.3 | R+41.2 | R+24.9 | 2,662 | 2,886 |
| Washington County | R+31.6 | R+56.5 | R+24.9 | 7,405 | 7,921 |
| Henry County flipped | D+3.1 | R+21.4 | R+24.5 | 24,322 | 25,700 |
| Cass County | R+13.5 | R+37.8 | R+24.3 | 4,862 | 5,326 |
| Jersey County | R+23.8 | R+48.0 | R+24.2 | 9,959 | 11,960 |
| Cumberland County | R+35.3 | R+59.1 | R+23.8 | 5,295 | 5,850 |
| Shelby County | R+33.6 | R+57.2 | R+23.6 | 10,395 | 12,097 |
| Hardin County | R+34.1 | R+57.4 | R+23.3 | 2,330 | 2,162 |
| Lawrence County | R+30.8 | R+54.0 | R+23.2 | 5,989 | 6,422 |
| Knox County flipped | D+17.4 | R+5.7 | R+23.1 | 23,278 | 23,205 |
| Jefferson County | R+22.8 | R+45.2 | R+22.4 | 16,320 | 17,436 |
| Moultrie County | R+27.1 | R+49.0 | R+21.9 | 6,057 | 6,744 |
| Christian County | R+23.0 | R+44.6 | R+21.6 | 14,701 | 16,204 |
| White County | R+36.0 | R+57.5 | R+21.5 | 7,064 | 7,431 |
| Jasper County | R+41.2 | R+62.5 | R+21.3 | 5,043 | 5,586 |
| Bureau County | R+0.2 | R+21.4 | R+21.2 | 16,631 | 17,434 |
| Clay County | R+44.1 | R+65.2 | R+21.1 | 5,908 | 6,899 |
| Putnam County flipped | D+1.8 | R+19.3 | R+21.1 | 3,135 | 3,390 |
| Clinton County | R+30.0 | R+51.0 | R+21.0 | 16,450 | 19,214 |
| Pope County | R+38.7 | R+59.3 | R+20.6 | 2,222 | 2,175 |
| Marshall County | R+14.2 | R+34.5 | R+20.3 | 5,850 | 6,345 |
| Richland County | R+32.9 | R+52.8 | R+19.9 | 7,282 | 8,063 |
| Edgar County | R+32.8 | R+52.6 | R+19.8 | 7,819 | 8,196 |
| Vermilion County | R+13.2 | R+32.9 | R+19.7 | 30,314 | 31,642 |
| Crawford County | R+31.7 | R+51.3 | R+19.6 | 8,609 | 9,441 |
| Saline County | R+29.0 | R+47.9 | R+18.9 | 10,720 | 11,089 |
| Edwards County | R+51.1 | R+69.6 | R+18.5 | 3,228 | 3,368 |
| Clark County | R+32.4 | R+50.6 | R+18.2 | 7,860 | 8,355 |
| Union County | R+22.0 | R+40.2 | R+18.2 | 8,282 | 8,904 |
| Jo Daviess County flipped | D+1.2 | R+16.5 | R+17.7 | 11,429 | 12,495 |
| Grundy County | R+8.9 | R+25.8 | R+16.9 | 21,244 | 26,753 |
| Wabash County | R+36.7 | R+53.3 | R+16.6 | 5,134 | 5,607 |
| Morgan County | R+15.4 | R+31.8 | R+16.4 | 14,096 | 15,333 |
| Johnson County | R+42.2 | R+58.5 | R+16.3 | 5,672 | 6,450 |
| De Witt County | R+26.9 | R+42.9 | R+16.0 | 7,345 | 8,024 |
| Coles County | R+11.1 | R+26.4 | R+15.3 | 21,358 | 22,606 |
| McDonough County | R+1.5 | R+16.6 | R+15.1 | 12,454 | 12,285 |
| Massac County | R+33.7 | R+48.0 | R+14.3 | 6,495 | 6,818 |
| Stephenson County | R+1.6 | R+15.7 | R+14.1 | 21,055 | 22,048 |
| LaSalle County | R+0.4 | R+14.3 | R+13.9 | 47,259 | 53,683 |
| Kankakee County | R+3.3 | R+16.5 | R+13.2 | 45,509 | 50,039 |
| Jackson County | D+14.4 | D+1.3 | R+13.1 | 24,012 | 22,716 |
| Livingston County | R+31.5 | R+44.2 | R+12.7 | 15,039 | 17,174 |
| Macon County | R+5.2 | R+17.7 | R+12.5 | 48,899 | 49,387 |
| Williamson County | R+25.0 | R+37.3 | R+12.3 | 29,143 | 33,729 |
| Lee County | R+7.4 | R+19.6 | R+12.2 | 15,301 | 16,440 |
| Iroquois County | R+44.6 | R+56.7 | R+12.1 | 12,784 | 14,044 |
| Wayne County | R+58.3 | R+70.4 | R+12.1 | 7,680 | 8,499 |
| Madison County | R+1.4 | R+13.3 | R+11.9 | 122,473 | 137,558 |
| Adams County | R+35.2 | R+46.5 | R+11.3 | 30,607 | 33,527 |
| Rock Island County | D+21.8 | D+12.1 | R+9.7 | 65,016 | 66,817 |
| Menard County | R+30.1 | R+39.4 | R+9.3 | 6,151 | 6,954 |
| Ogle County | R+16.7 | R+25.9 | R+9.2 | 23,367 | 26,340 |
| Monroe County | R+26.8 | R+35.7 | R+8.9 | 17,432 | 21,206 |
| Boone County | R+5.6 | R+13.4 | R+7.8 | 21,365 | 24,979 |
| Tazewell County | R+17.9 | R+25.7 | R+7.8 | 61,048 | 69,051 |
| Douglas County | R+36.7 | R+44.4 | R+7.7 | 7,897 | 8,760 |
| Logan County | R+32.1 | R+39.8 | R+7.7 | 12,053 | 13,294 |
| Effingham County | R+52.0 | R+59.1 | R+7.1 | 16,613 | 19,083 |
| St. Clair County | D+14.3 | D+8.7 | R+5.6 | 119,466 | 128,104 |
| Ford County | R+42.8 | R+47.3 | R+4.5 | 6,006 | 6,967 |
| Winnebago County | D+5.6 | D+2.5 | R+3.1 | 118,984 | 127,710 |
| Piatt County | R+26.7 | R+29.6 | R+2.9 | 8,707 | 9,851 |
| Woodford County | R+39.2 | R+40.1 | R+0.9 | 18,874 | 21,498 |
| DeKalb County | D+5.5 | D+5.8 | D+0.3 | 41,092 | 47,989 |
| Cook County | D+49.4 | D+50.4 | D+1.0 | 2,011,597 | 2,321,399 |
| Peoria County | D+4.4 | D+6.3 | D+1.9 | 78,411 | 83,973 |
| Will County | D+5.5 | D+8.3 | D+2.8 | 277,387 | 346,266 |
| Sangamon County | R+8.6 | R+4.4 | D+4.2 | 94,297 | 104,751 |
| McHenry County | R+8.8 | R+2.5 | D+6.3 | 133,844 | 164,578 |
| Kendall County flipped | R+3.3 | D+5.8 | D+9.1 | 47,295 | 64,205 |
| Kane County | D+1.1 | D+14.4 | D+13.3 | 181,642 | 231,876 |
| McLean County flipped | R+11.0 | D+4.0 | D+15.0 | 73,382 | 87,389 |
| Lake County | D+8.4 | D+24.1 | D+15.7 | 287,493 | 334,156 |
| Champaign County | D+7.0 | D+22.8 | D+15.8 | 78,359 | 95,568 |
| DuPage County | D+1.1 | D+18.1 | D+17.0 | 401,079 | 485,064 |
Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data