| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | DEM | 146,577 | 61.7% | D+23.4 | |
| OH-02 | REP | 148,509 | 70.7% | R+41.5 | |
| OH-03 | Tony P HallDEM | DEM | 133,478 | 73.7% | D+47.3 |
| OH-04 | REP | 154,068 | 75.1% | R+58.0 | |
| OH-05 | REP | 156,880 | 65.0% | R+30.1 | |
| OH-06 | Bob McEwenREP | REP | 151,338 | 70.3% | R+42.4 |
| OH-07 | REP | 119,238 | 100.0% | R+100.0 | |
| OH-08 | REP | 144,670 | 68.1% | R+36.1 | |
| OH-09 | Marcy KapturDEM | DEM | 136,289 | 77.5% | D+55.0 |
| OH-10 | REP | 151,717 | 70.4% | R+40.9 | |
| OH-11 | DEM | 144,568 | 72.5% | D+47.6 | |
| OH-12 | REP | 160,632 | 73.4% | R+46.8 | |
| OH-13 | DEM | 141,064 | 62.8% | D+25.6 | |
| OH-14 | DEM | 154,970 | 53.7% | D+7.5 | |
| OH-15 | REP | 153,495 | 63.7% | R+27.4 | |
| OH-16 | REP | 154,845 | 76.3% | R+52.7 | |
| OH-17 | DEM | 156,189 | 72.3% | D+44.5 | |
| OH-18 | DEM | 126,526 | 100.0% | D+100.0 | |
| OH-19 | DEM | 178,557 | 54.8% | D+9.6 | |
| OH-20 | DEM | 130,770 | 84.9% | D+69.7 | |
| OH-21 | Louis StokesDEM | DEM | 122,472 | 81.5% | D+63.1 |