U.S. House seat for Pennsylvania's 5th congressional district. Representatives serve two-year terms.

6 candidates filed, 2 active for the 2026 House election in Pennsylvania District 5. Party primary on May 19, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Mary Gay Scanlon D | 65.3% | 410,109 | |
| 2022 | Mary Gay Scanlon D | 65.1% | 315,186 | |
| 2020 | Mary Gay Scanlon D | 64.7% | 395,295 | |
| 2018 | Mary Gay Scanlon D | 65.2% | 304,714 | |
| 2016 | Glenn Thompson R | 67.2% | 307,843 | |
| 2014 | Glenn Thompson R | 63.6% | 180,857 | |
| 2012 | Glenn Thompson R | 62.9% | 282,465 | |
| 2010 | Glenn Thompson R | 68.7% | 185,512 | |
| 2008 | Glenn W Thompson R | 56.7% | 274,177 | |
| 2006 | John E Peterson R | 60.1% | 191,582 | |
| 2004 | John E Peterson R | 88.0% | 219,091 | |
| 2002 | John E Peterson R | 87.4% | 143,020 | |
| 2000 | John E Peterson R | 85.6% | 172,447 | |
| 1998 | John E Peterson R | 84.9% | 117,236 | |
| 1996 | John E Peterson R | 60.3% | 192,930 |