| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | Steve ChabotREP | REP | 218,424 | 54.2% | R+10.8 |
| OH-02 | Rob PortmanREP | REP | 259,473 | 72.0% | R+49.4 |
| OH-03 | Tony P HallDEM | DEM | 227,203 | 63.6% | D+30.3 |
| OH-04 | REP | 227,761 | 64.8% | R+34.5 | |
| OH-05 | REP | 238,523 | 61.2% | R+27.1 | |
| OH-06 | DEM | 229,926 | 51.3% | D+2.6 | |
| OH-07 | REP | 233,001 | 67.8% | R+41.5 | |
| OH-08 | REP | 235,943 | 70.3% | R+44.2 | |
| OH-09 | Marcy KapturDEM | DEM | 221,334 | 77.1% | D+56.3 |
| OH-10 | DEM | 225,696 | 49.1% | D+2.7 | |
| OH-11 | Louis StokesDEM | DEM | 189,039 | 81.2% | D+66.0 |
| OH-12 | REP | 237,434 | 63.9% | R+30.7 | |
| OH-13 | DEM | 244,505 | 60.8% | D+25.2 | |
| OH-14 | DEM | 228,435 | 54.3% | D+12.6 | |
| OH-15 | REP | 221,441 | 70.8% | R+41.6 | |
| OH-16 | REP | 231,827 | 68.7% | R+40.7 | |
| OH-17 | DEM | 239,968 | 91.0% | D+91.0 | |
| OH-18 | REP | 233,843 | 50.2% | R+3.9 | |
| OH-19 | REP | 246,819 | 54.7% | R+13.7 |