| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| IA-01 | Jim LeachREP | REP | 196,475 | 66.8% | R+33.5 |
| IA-02 | REP | 214,228 | 63.9% | R+27.8 | |
| IA-03 | Cooper EvansREP | REP | 220,311 | 60.7% | R+21.4 |
| IA-04 | Neal SmithDEM | DEM | 225,639 | 60.7% | D+21.4 |
| IA-05 | REP | 206,067 | 50.8% | R+1.6 | |
| IA-06 | DEM | 205,888 | 62.0% | D+24.1 |