| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | DEM | 296,290 | 52.5% | D+5.0 | |
| OH-02 | Jean SchmidtREP | REP | 331,624 | 44.8% | R+7.4 |
| OH-03 | REP | 316,180 | 63.3% | R+26.6 | |
| OH-04 | Jim JordanREP | REP | 285,653 | 65.2% | R+30.3 |
| OH-05 | REP | 294,745 | 64.1% | R+28.2 | |
| OH-06 | DEM | 283,110 | 62.3% | D+29.4 | |
| OH-07 | REP | 300,462 | 58.2% | R+16.4 | |
| OH-08 | REP | 297,573 | 67.9% | R+35.8 | |
| OH-09 | Marcy KapturDEM | DEM | 298,566 | 74.4% | D+48.8 |
| OH-10 | DEM | 275,809 | 57.0% | D+17.9 | |
| OH-11 | DEM | 249,542 | 85.2% | D+70.5 | |
| OH-12 | REP | 360,388 | 54.8% | R+12.6 | |
| OH-13 | Betty SuttonDEM | DEM | 297,680 | 64.7% | D+29.4 |
| OH-14 | REP | 323,213 | 58.3% | R+19.6 | |
| OH-15 | DEM | 303,838 | 45.9% | D+0.8 | |
| OH-16 | DEM | 305,337 | 55.4% | D+10.7 | |
| OH-17 | Tim RyanDEM | DEM | 280,112 | 78.2% | D+56.3 |
| OH-18 | DEM | 274,218 | 59.9% | D+19.8 |