St. Charles County, Missouri
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 53,806 | 41.8% | 72,114 | 56.0% | 2,766 | 2.1% | 128,686 |
| 2004 | 66,855 | 40.9% | 95,826 | 58.6% | 807 | 0.5% | 163,488 |
| 2008 | 84,183 | 44.7% | 102,550 | 54.4% | 1,796 | 1.0% | 188,529 |
| 2012 | 71,838 | 38.7% | 110,784 | 59.7% | 3,068 | 1.7% | 185,690 |
| 2016 | 68,626 | 34.1% | 121,650 | 60.5% | 10,729 | 5.3% | 201,005 |
| 2020 | 89,530 | 40.3% | 128,389 | 57.8% | 4,098 | 1.8% | 222,017 |