Union County, South Dakota
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 2,358 | 40.9% | 3,265 | 56.6% | 149 | 2.6% | 5,772 |
| 2004 | 3,000 | 42.6% | 3,987 | 56.6% | 61 | 0.9% | 7,048 |
| 2008 | 3,244 | 42.6% | 4,310 | 56.6% | 66 | 0.9% | 7,620 |
| 2012 | 2,782 | 36.6% | 4,698 | 61.8% | 116 | 1.5% | 7,596 |
| 2016 | 2,227 | 28.2% | 5,290 | 67.0% | 380 | 4.8% | 7,897 |
| 2020 | 2,725 | 30.8% | 5,944 | 67.1% | 186 | 2.1% | 8,855 |