Union County, Iowa
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 2,540 | 44.3% | 3,003 | 52.3% | 197 | 3.4% | 5,740 |
| 2004 | 2,747 | 46.0% | 3,165 | 52.9% | 66 | 1.1% | 5,978 |
| 2008 | 3,000 | 50.8% | 2,781 | 47.1% | 128 | 2.2% | 5,909 |
| 2012 | 3,043 | 51.1% | 2,813 | 47.2% | 101 | 1.7% | 5,957 |
| 2016 | 1,922 | 33.0% | 3,525 | 60.4% | 385 | 6.6% | 5,832 |
| 2020 | 2,061 | 33.3% | 4,024 | 65.1% | 100 | 1.6% | 6,185 |