Mercer County, Illinois
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 4,400 | 52.9% | 3,688 | 44.3% | 230 | 2.8% | 8,318 |
| 2004 | 4,512 | 50.3% | 4,405 | 49.1% | 57 | 0.6% | 8,974 |
| 2008 | 4,887 | 55.2% | 3,833 | 43.3% | 128 | 1.4% | 8,848 |
| 2012 | 4,507 | 52.8% | 3,876 | 45.4% | 151 | 1.8% | 8,534 |
| 2016 | 3,071 | 36.0% | 4,807 | 56.4% | 647 | 7.6% | 8,525 |
| 2020 | 3,280 | 36.9% | 5,418 | 60.9% | 195 | 2.2% | 8,893 |