| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | DEM | 391,909 | 54.6% | D+9.2 | |
| OH-02 | REP | 364,616 | 73.6% | R+47.1 | |
| OH-03 | Joyce BeattyDEM | DEM | 342,987 | 70.7% | D+41.5 |
| OH-04 | Jim JordanREP | REP | 399,202 | 68.5% | R+36.9 |
| OH-05 | REP | 378,657 | 67.5% | R+35.0 | |
| OH-06 | REP | 368,375 | 66.7% | R+33.5 | |
| OH-07 | Max MillerREP | REP | 400,371 | 51.1% | R+15.0 |
| OH-08 | REP | 378,128 | 62.8% | R+25.6 | |
| OH-09 | Marcy KapturDEM | DEM | 375,195 | 48.3% | D+0.6 |
| OH-10 | REP | 370,746 | 57.6% | R+18.4 | |
| OH-11 | DEM | 302,413 | 78.3% | D+58.7 | |
| OH-12 | REP | 380,188 | 68.5% | R+37.0 | |
| OH-13 | DEM | 386,390 | 51.1% | D+2.2 | |
| OH-14 | REP | 383,858 | 63.4% | R+26.8 | |
| OH-15 | Mike CareyREP | REP | 347,749 | 56.5% | R+12.9 |