| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | DEM | 208,420 | 56.5% | D+12.9 | |
| OH-02 | REP | 211,799 | 72.3% | R+44.6 | |
| OH-03 | Tony P HallDEM | DEM | 184,617 | 76.9% | D+53.8 |
| OH-04 | REP | 160,637 | 99.7% | R+99.7 | |
| OH-05 | REP | 204,310 | 60.6% | R+21.2 | |
| OH-06 | Bob McEwenREP | REP | 204,870 | 74.3% | R+48.6 |
| OH-07 | REP | 193,020 | 73.9% | R+47.8 | |
| OH-08 | REP | 203,248 | 75.8% | R+51.7 | |
| OH-09 | Marcy KapturDEM | DEM | 193,812 | 81.3% | D+62.6 |
| OH-10 | REP | 200,566 | 71.6% | R+43.3 | |
| OH-11 | DEM | 202,628 | 61.5% | D+23.0 | |
| OH-12 | REP | 255,674 | 80.1% | R+60.3 | |
| OH-13 | DEM | 196,361 | 69.8% | D+39.6 | |
| OH-14 | DEM | 199,307 | 74.7% | D+49.5 | |
| OH-15 | REP | 205,866 | 75.1% | R+50.3 | |
| OH-16 | REP | 202,180 | 78.6% | R+57.1 | |
| OH-17 | DEM | 210,455 | 77.2% | D+54.5 | |
| OH-18 | DEM | 194,934 | 77.6% | D+55.2 | |
| OH-19 | DEM | 238,424 | 70.5% | D+41.0 | |
| OH-20 | DEM | 177,659 | 82.6% | D+65.2 | |
| OH-21 | Louis StokesDEM | DEM | 173,192 | 85.7% | D+71.4 |