Illinois — 2020 Democratic presidential primary
Akashic2020 · Democratic presidential primaryIllinois · Democratic primaryBiden+22.7
Who led each county
Illinois's 2020 Democratic primary — 102 counties reporting. Each county links to its place page.
2020Democratic primary leaderBidenSanderscolor = leader · depth = size of the lead
Counties with reported returns are filled by the candidate who led them; the surrounding faint geography is context, not coverage. This is the nominating contest — the November result is on the general-election page.
Statewide result
Illinois 2020 Democratic presidential primary — 1,679,098 votes, county returns aggregated statewide.
- Biden✓986,66158.8%
- Sanders605,70136.1%
- Bloomberg25,5001.5%
- Warren24,4131.5%
- All others9,7300.6%
- Buttigieg9,7290.6%
- Gabbard9,6420.6%
- Yang4,0210.2%
- Klobuchar2,0170.1%
- Steyer1,6840.1%
County-by-county leaders — 102 counties
| County | Led by | Margin | Votes |
|---|---|---|---|
| Cook County | Biden | +19.1 | 941,892 |
| DuPage County | Biden | +27.0 | 113,351 |
| Lake County | Biden | +36.1 | 84,551 |
| Will County | Biden | +24.6 | 81,551 |
| Kane County | Biden | +21.6 | 51,632 |
| McHenry County | Biden | +24.0 | 31,209 |
| St. Clair County | Biden | +42.6 | 29,598 |
| Winnebago County | Biden | +19.4 | 26,534 |
| Champaign County | Sanders | +2.6 | 26,042 |
| Madison County | Biden | +27.3 | 25,772 |
| McLean County | Biden | +12.1 | 18,928 |
| Peoria County | Biden | +30.6 | 18,827 |
| Sangamon County | Biden | +29.9 | 18,182 |
| Rock Island County | Biden | +31.0 | 15,474 |
| Kendall County | Biden | +20.2 | 14,175 |
| DeKalb County | Biden | +7.1 | 10,727 |
| LaSalle County | Biden | +29.4 | 10,236 |
| Tazewell County | Biden | +31.0 | 10,172 |
| Kankakee County | Biden | +25.2 | 9,095 |
| Macon County | Biden | +34.8 | 7,626 |
| Jackson County | Biden | +7.5 | 6,459 |
| Whiteside County | Biden | +34.1 | 4,652 |
| Knox County | Biden | +27.9 | 4,545 |
| Vermilion County | Biden | +38.0 | 4,518 |
| Boone County | Biden | +12.3 | 4,331 |
| Williamson County | Biden | +29.1 | 4,319 |
| Grundy County | Biden | +20.9 | 4,069 |
| Ogle County | Biden | +20.2 | 3,964 |
| Macoupin County | Biden | +36.3 | 3,902 |
| Stephenson County | Biden | +35.9 | 3,754 |
| Adams County | Biden | +40.8 | 3,671 |
| Henry County | Biden | +42.4 | 3,471 |
| Fulton County | Biden | +32.3 | 3,386 |
| Coles County | Biden | +20.9 | 3,317 |
| Bureau County | Biden | +36.4 | 2,660 |
| Marion County | Biden | +36.1 | 2,622 |
| Franklin County | Biden | +34.2 | 2,582 |
| Woodford County | Biden | +34.8 | 2,552 |
| Jo Daviess County | Biden | +44.3 | 2,543 |
| Lee County | Biden | +24.4 | 2,503 |
| Monroe County | Biden | +31.8 | 2,491 |
| Jefferson County | Biden | +39.5 | 2,153 |
| McDonough County | Biden | +26.6 | 2,143 |
| Christian County | Biden | +36.1 | 1,956 |
| Morgan County | Biden | +29.7 | 1,855 |
| Livingston County | Biden | +34.4 | 1,773 |
| Randolph County | Biden | +44.8 | 1,743 |
| Montgomery County | Biden | +42.5 | 1,723 |
| Effingham County | Biden | +37.2 | 1,644 |
| Clinton County | Biden | +32.9 | 1,501 |
| Union County | Biden | +29.1 | 1,415 |
| Jersey County | Biden | +36.6 | 1,403 |
| Mercer County | Biden | +40.2 | 1,366 |
| Logan County | Biden | +24.5 | 1,345 |
| Saline County | Biden | +32.7 | 1,338 |
| Perry County | Biden | +44.2 | 1,332 |
| Shelby County | Biden | +46.1 | 1,307 |
| Piatt County | Biden | +30.1 | 1,293 |
| Hancock County | Biden | +52.8 | 1,270 |
| Warren County | Biden | +39.8 | 1,200 |
| Mason County | Biden | +44.1 | 1,162 |
| Iroquois County | Biden | +27.5 | 1,155 |
| Bond County | Biden | +34.7 | 1,141 |
| Carroll County | Biden | +39.8 | 1,055 |
| Clark County | Biden | +31.8 | 1,051 |
| Crawford County | Biden | +36.8 | 1,003 |
| De Witt County | Biden | +35.5 | 933 |
| Greene County | Biden | +41.7 | 841 |
| Douglas County | Biden | +33.1 | 827 |
| Edgar County | Biden | +38.8 | 807 |
| Fayette County | Biden | +45.0 | 806 |
| Moultrie County | Biden | +39.5 | 784 |
| Richland County | Biden | +31.9 | 772 |
| Menard County | Biden | +44.3 | 754 |
| White County | Biden | +47.0 | 749 |
| Marshall County | Biden | +38.9 | 733 |
| Cass County | Biden | +36.7 | 730 |
| Lawrence County | Biden | +42.2 | 711 |
| Massac County | Biden | +33.2 | 707 |
| Pike County | Biden | +47.6 | 674 |
| Washington County | Biden | +30.6 | 641 |
| Ford County | Biden | +19.6 | 632 |
| Putnam County | Biden | +46.9 | 616 |
| Hamilton County | Biden | +49.2 | 612 |
| Henderson County | Biden | +45.8 | 587 |
| Gallatin County | Biden | +37.0 | 586 |
| Wayne County | Biden | +22.2 | 582 |
| Alexander County | Biden | +50.9 | 578 |
| Johnson County | Biden | +36.0 | 561 |
| Cumberland County | Biden | +36.8 | 546 |
| Wabash County | Biden | +41.2 | 502 |
| Jasper County | Biden | +40.5 | 492 |
| Clay County | Biden | +37.2 | 487 |
| Schuyler County | Biden | +46.1 | 471 |
| Pulaski County | Biden | +48.2 | 390 |
| Calhoun County | Biden | +53.2 | 357 |
| Stark County | Biden | +32.9 | 325 |
| Hardin County | Biden | +23.8 | 248 |
| Edwards County | Biden | +34.7 | 222 |
| Pope County | Biden | +28.8 | 222 |
| Brown County | Biden | +51.7 | 211 |
| Scott County | Biden | +31.6 | 190 |
Source. Official statewide canvasses — 2020 Democratic presidential primary returns · county returns aggregated statewide. Coverage is the nominating contest as reported by the state; margins are the leader’s edge over the runner-up. Real returns — nothing estimated.