McHenry County, Illinois
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 40,698 | 38.3% | 62,112 | 58.5% | 3,375 | 3.2% | 106,185 |
| 2004 | 50,330 | 39.3% | 76,412 | 59.7% | 1,206 | 0.9% | 127,948 |
| 2008 | 72,288 | 51.9% | 64,845 | 46.6% | 2,135 | 1.5% | 139,268 |
| 2012 | 59,797 | 44.7% | 71,598 | 53.5% | 2,449 | 1.8% | 133,844 |
| 2016 | 60,803 | 42.9% | 71,612 | 50.5% | 9,335 | 6.6% | 141,750 |
| 2020 | 78,154 | 47.7% | 82,260 | 50.2% | 3,465 | 2.1% | 163,879 |