Johnson County, Iowa
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 31,174 | 59.1% | 17,899 | 33.9% | 3,696 | 7.0% | 52,769 |
| 2004 | 41,847 | 64.0% | 22,715 | 34.7% | 811 | 1.2% | 65,373 |
| 2008 | 51,027 | 69.9% | 20,732 | 28.4% | 1,216 | 1.7% | 72,975 |
| 2012 | 50,666 | 66.7% | 23,698 | 31.2% | 1,613 | 2.1% | 75,977 |
| 2016 | 50,200 | 65.2% | 21,044 | 27.4% | 5,696 | 7.4% | 76,940 |
| 2020 | 59,177 | 70.6% | 23,206 | 27.7% | 1,468 | 1.8% | 83,851 |