Mahaska County, Iowa
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 3,370 | 35.3% | 5,971 | 62.6% | 202 | 2.1% | 9,543 |
| 2004 | 3,790 | 35.3% | 6,858 | 63.9% | 80 | 0.7% | 10,728 |
| 2008 | 4,464 | 40.8% | 6,271 | 57.4% | 197 | 1.8% | 10,932 |
| 2012 | 4,213 | 38.7% | 6,448 | 59.2% | 222 | 2.0% | 10,883 |
| 2016 | 2,619 | 24.6% | 7,432 | 69.9% | 581 | 5.5% | 10,632 |
| 2020 | 2,894 | 25.4% | 8,320 | 73.0% | 190 | 1.7% | 11,404 |