10 Republican-held seats are contested this year. Democrats would need to flip 6 to gain control.
| Seat | Current member | 2026 race |
|---|---|---|
| District 1 | Michael G. Yerdon R | Unopposed Michael G. Yerdon RC |
| District 2 | Herbert G. Yerdon R | Unopposed Herbert G. Yerdon RC |
| District 3 | Edward Gilson R | Contested Glen Stratton DO vs. Edward Gilson RC |
| District 4 | Patricia (Patti) Holst R | Contested Bailey Lovenguth DO vs. Patricia Holst CO |
| District 5 | Roy Reehil R | Contested James J. Jackson DO vs. Roy Reehil RC |
| District 6 | John Martino R | Contested Brenda Chapman DO vs. John Martino R |
| District 7 | Frank Bombardo R | Contested Courtney Yawman DO vs. Frank C. Bombardo R |
| District 8 | Paul House R | Unopposed Paul House RC |
| District 9 | James Weatherup R | Contested Randy Wilkinson DO vs. Kenneth Sherman RC vs. Mike Clark O |
| District 10 | Mary Ellen Chesbro R | Unopposed Mary Ellen Chesbro RC |
| District 11 | Linda Lockwood R | Unopposed Holly F. Carpenter RC |
| District 12 | Richard Kline R | Contested Christine Vaverchak Vestigo DO vs. Richard Kline RO |
| District 13 | Patrick Twiss R | Unopposed Patrick Twiss RC |
| District 14 | Stephen Walpole R | Unopposed Stephen Walpole RC |
| District 15 | Lee B. Walker Jr. D | Unopposed Lee B. Walker Jr. DO |
| District 16 | Christine Novak D | Contested Christine Novak DO vs. Jay Scanlon RC |
| District 17 | Dorothy Caldwell D | Contested Dorothy Caldwell DO vs. Charles Burger RO |
| District 18 | Robert Wilmott R | Contested Tod Simons DO vs. Robert Wilmott R |
| District 19 | Marie Schadt D | Contested Marie Schadt DO vs. Gregory A. Clark RC |
| District 20 | Paul Connolly R | Contested Colette Madonna Badger DO vs. Paul Connolly RC |
| District 21 | Noelle Salmonsen R | Unopposed Noelle Beckwith Salmonsen RC |
| District 22 | Joseph Arduini D | Contested Joseph Arduini DO vs. Daniel Shue RC |
| District 23 | Michael Solowy R | Contested Todd Sawyer DO vs. Michael Solowy RC |
| District 24 | Gena Bartlett D | Contested Gena Bartlett DO vs. Jason Spaulding RC |
| District 25 | Ryan Taylor D | Contested Ryan Taylor DO vs. Ethan Parkhurst RC |