Jefferson County, Iowa
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 2,863 | 37.9% | 3,248 | 43.0% | 1,437 | 19.0% | 7,548 |
| 2004 | 4,490 | 54.2% | 3,648 | 44.1% | 143 | 1.7% | 8,281 |
| 2008 | 5,070 | 58.7% | 3,324 | 38.5% | 237 | 2.7% | 8,631 |
| 2012 | 4,798 | 56.2% | 3,436 | 40.3% | 296 | 3.5% | 8,530 |
| 2016 | 3,710 | 45.5% | 3,748 | 46.0% | 698 | 8.6% | 8,156 |
| 2020 | 4,319 | 48.2% | 4,476 | 50.0% | 164 | 1.8% | 8,959 |