St. Mary's County, Maryland
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 11,912 | 40.4% | 16,856 | 57.1% | 733 | 2.5% | 29,501 |
| 2004 | 13,776 | 36.3% | 23,725 | 62.6% | 415 | 1.1% | 37,916 |
| 2008 | 19,023 | 42.8% | 24,705 | 55.6% | 681 | 1.5% | 44,409 |
| 2012 | 19,711 | 41.2% | 26,797 | 56.0% | 1,316 | 2.8% | 47,824 |
| 2016 | 17,534 | 35.2% | 28,663 | 57.5% | 3,645 | 7.3% | 49,842 |
| 2020 | 23,138 | 41.6% | 30,826 | 55.4% | 1,701 | 3.1% | 55,665 |