New Hampshire held special elections on November 4, 2025, deciding 2 legislative seats across 1 district.
Legislature
- House (400 seats): 170 D, 213 R, 17 other or vacant before the election, 0 D, 0 R after.
- Senate (24 seats): 8 D, 16 R before the election, 8 D, 16 R after; control stayed with Republicans.
Legislative races
| Race | Winner | Others | Notes |
|---|---|---|---|
| House Coos-5 | Marc Tremblay (R) 50.1% | Corinne Cascadden (D) 49.9% |