U.S. House seat for Ohio's 12th congressional district. Representatives serve two-year terms.

4 candidates filed, 3 active for the 2026 House election in Ohio District 12. Party primary on May 5, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Troy Balderson R | 68.5% | 380,188 | |
| 2022 | Troy Balderson R | 69.3% | 276,237 | |
| 2020 | Troy Balderson R | 55.2% | 437,672 | |
| 2018 | Troy Balderson R | 51.4% | 341,646 | |
| 2016 | Patrick J Tiberi R | 66.6% | 377,378 | |
| 2014 | Patrick J Tiberi R | 68.1% | 221,081 | |
| 2012 | Patrick J Tiberi R | 63.5% | 368,474 | |
| 2010 | Patrick J Tiberi R | 55.8% | 269,180 | |
| 2008 | Patrick J Tiberi R | 54.8% | 360,388 | |
| 2006 | Patrick J Tiberi R | 57.3% | 254,689 | |
| 2004 | Patrick J Tiberi R | 62.0% | 321,021 | |
| 2002 | Patrick J Tiberi R | 64.4% | 181,689 | |
| 2000 | Pat Tiberi R | 52.9% | 263,386 | |
| 1998 | John R Kasich R | 67.2% | 184,891 | |
| 1996 | John R Kasich R | 63.9% | 237,434 |