Dubuque County, Iowa
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 22,341 | 55.4% | 16,462 | 40.8% | 1,520 | 3.8% | 40,323 |
| 2004 | 26,561 | 56.5% | 20,100 | 42.7% | 382 | 0.8% | 47,043 |
| 2008 | 28,611 | 59.7% | 18,651 | 38.9% | 691 | 1.4% | 47,953 |
| 2012 | 28,768 | 56.5% | 21,280 | 41.8% | 846 | 1.7% | 50,894 |
| 2016 | 22,850 | 46.0% | 23,460 | 47.2% | 3,411 | 6.9% | 49,721 |
| 2020 | 25,657 | 47.6% | 27,358 | 50.7% | 911 | 1.7% | 53,926 |