U.S. House seat for Idaho's 2nd congressional district. Representatives serve two-year terms.

15 candidates filed, 8 active for the 2026 House election in Idaho District 2. Party primary on May 19, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Michael K. Simpson R | 61.4% | 407,462 | |
| 2022 | Michael K Simpson R | 63.6% | 271,186 | |
| 2020 | Michael K Simpson R | 64.1% | 391,333 | |
| 2018 | Mike Simpson R | 60.7% | 280,655 | |
| 2016 | Michael K Simpson R | 62.9% | 326,237 | |
| 2014 | Michael K Simpson R | 61.4% | 214,293 | |
| 2012 | Michael K Simpson R | 65.2% | 318,259 | |
| 2010 | Michael K Simpson R | 68.8% | 199,717 | |
| 2008 | Michael K Simpson R | 71.0% | 289,655 | |
| 2006 | Michael K Simpson R | 62.0% | 213,332 | |
| 2004 | Michael K Simpson R | 70.7% | 273,837 | |
| 2002 | Michael K Simpson R | 68.2% | 198,882 | |
| 2000 | Michael K Simpson R | 70.7% | 224,719 | |
| 1998 | Mike Simpson R | 52.5% | 173,927 | |
| 1996 | Michael D Crapo R | 68.8% | 229,248 |