| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | Steve ChabotREP | REP | 174,424 | 53.0% | R+6.0 |
| OH-02 | Rob PortmanREP | REP | 203,637 | 75.8% | R+51.6 |
| OH-03 | Tony P HallDEM | DEM | 164,742 | 69.3% | D+38.6 |
| OH-04 | REP | 175,540 | 63.8% | R+27.6 | |
| OH-05 | REP | 185,905 | 66.7% | R+33.4 | |
| OH-06 | DEM | 180,563 | 57.0% | D+13.9 | |
| OH-07 | REP | 179,697 | 67.2% | R+39.5 | |
| OH-08 | REP | 180,891 | 70.8% | R+41.5 | |
| OH-09 | Marcy KapturDEM | DEM | 161,105 | 81.2% | D+62.4 |
| OH-10 | DEM | 165,567 | 66.8% | D+33.5 | |
| OH-11 | DEM | 143,295 | 80.4% | D+67.4 | |
| OH-12 | REP | 184,891 | 67.2% | R+34.4 | |
| OH-13 | DEM | 188,975 | 61.5% | D+23.1 | |
| OH-14 | DEM | 169,073 | 62.7% | D+25.4 | |
| OH-15 | REP | 173,176 | 65.7% | R+37.3 | |
| OH-16 | REP | 183,473 | 64.0% | R+28.0 | |
| OH-17 | DEM | 181,421 | 68.2% | D+36.4 | |
| OH-18 | REP | 187,690 | 60.3% | R+20.5 | |
| OH-19 | REP | 190,876 | 66.4% | R+32.9 |