RDH precinct returns aggregated statewide · (Dem−Rep)÷total · 2020 presidential · counts, not dollars.
| County | Lean | Dem | Rep | Total |
|---|---|---|---|---|
| Cook County | D+50.3 | 1725973 | 558269 | 2321399 |
| DuPage County | D+18.1 | 281222 | 193611 | 485064 |
| Will County | D+8.3 | 183915 | 155116 | 345095 |
| Lake County | D+24.1 | 204032 | 123594 | 334156 |
| Kane County | D+14.4 | 130166 | 96775 | 231863 |
| McHenry County | R+2.5 | 78154 | 82260 | 163874 |
| Madison County | R+13.3 | 57836 | 76031 | 137135 |
| St. Clair County | D+8.7 | 68325 | 57150 | 128090 |
| Winnebago County | D+2.5 | 64056 | 60861 | 127709 |
| Sangamon County | R+4.4 | 48917 | 53485 | 104751 |
| Champaign County | D+22.9 | 57067 | 35285 | 95052 |
| McLean County | D+3.9 | 43933 | 40502 | 87000 |