| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | DEM | 164,294 | 51.1% | D+2.2 | |
| OH-02 | REP | 161,162 | 64.4% | R+28.8 | |
| OH-03 | Tony P HallDEM | DEM | 116,797 | 100.0% | D+100.0 |
| OH-04 | REP | 168,364 | 61.7% | R+23.4 | |
| OH-05 | REP | 165,920 | 68.5% | R+43.4 | |
| OH-06 | Bob McEwenREP | REP | 164,635 | 71.2% | R+42.4 |
| OH-07 | REP | 156,472 | 62.1% | R+24.1 | |
| OH-08 | REP | 163,539 | 61.1% | R+22.2 | |
| OH-09 | Marcy KapturDEM | DEM | 151,472 | 77.7% | D+55.4 |
| OH-10 | REP | 167,665 | 63.2% | R+26.4 | |
| OH-11 | DEM | 170,305 | 65.7% | D+31.4 | |
| OH-12 | REP | 181,279 | 72.0% | R+44.0 | |
| OH-13 | DEM | 164,862 | 56.7% | D+19.7 | |
| OH-14 | DEM | 164,335 | 59.6% | D+19.1 | |
| OH-15 | REP | 167,919 | 59.1% | R+18.3 | |
| OH-16 | REP | 171,613 | 58.9% | R+17.8 | |
| OH-17 | DEM | 171,406 | 77.7% | D+55.4 | |
| OH-18 | DEM | 162,605 | 74.3% | D+48.6 | |
| OH-19 | DEM | 205,266 | 64.8% | D+29.5 | |
| OH-20 | DEM | 149,139 | 73.3% | D+46.7 | |
| OH-21 | Louis StokesDEM | DEM | 129,249 | 80.0% | D+59.9 |