Jefferson County, Missouri
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 38,616 | 50.0% | 36,766 | 47.6% | 1,822 | 2.4% | 77,204 |
| 2004 | 46,057 | 49.4% | 46,624 | 50.0% | 583 | 0.6% | 93,264 |
| 2008 | 53,467 | 50.6% | 50,804 | 48.1% | 1,433 | 1.4% | 105,704 |
| 2012 | 41,564 | 42.6% | 53,978 | 55.3% | 2,069 | 2.1% | 97,611 |
| 2016 | 31,568 | 29.7% | 69,036 | 65.0% | 5,634 | 5.3% | 106,238 |
| 2020 | 37,523 | 32.2% | 77,046 | 66.0% | 2,119 | 1.8% | 116,688 |