Boone County, Iowa
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 6,270 | 51.2% | 5,625 | 45.9% | 354 | 2.9% | 12,249 |
| 2004 | 7,027 | 50.2% | 6,870 | 49.0% | 112 | 0.8% | 14,009 |
| 2008 | 7,356 | 52.8% | 6,293 | 45.2% | 280 | 2.0% | 13,929 |
| 2012 | 7,512 | 52.2% | 6,556 | 45.6% | 320 | 2.2% | 14,388 |
| 2016 | 5,541 | 39.0% | 7,484 | 52.7% | 1,171 | 8.2% | 14,196 |
| 2020 | 6,303 | 41.1% | 8,729 | 56.9% | 308 | 2.0% | 15,340 |