Republican-held seats worth 28 weighted votes are contested this year. Democrats would need to flip 101 weighted votes to gain control, so control can't change in 2026.
| Seat | Current member | Weighted vote | 2026 race |
|---|---|---|---|
| Arcadia | Dawn Pisciotti R | 29 | Seat not up for election |
| Butler | Tommy Mettler R | 4 | Unopposed Tommy Mettler R |
| Galen | Lester W. Carr Jr. R | 10 | Seat not up for election |
| Huron | Dave Fantuzzo R | 4 | Unopposed Dave Fantuzzo RC |
| Lyons | James (Jim) Brady R | 13 | Seat not up for election |
| Macedon | Kim V. Leonard R | 20 | Seat not up for election |
| Marion | Mike Cramer R | 10 | Unopposed Mike Cramer R |
| Ontario | Ben Aman R | 23 | Contested Jim Switzer D vs. Ben Aman RC |
| Palmyra | Gary A. Rose R | 16 | Seat not up for election |
| Rose | Christine Rice R | 5 | Contested Kenan S. Baldridge D vs. Christine Rice RC |
| Savannah | Michael Kolczynski R | 4 | Unopposed Michael Kolczynski RO |
| Sodus | Scott Johnson R | 18 | Seat not up for election |
| Walworth | Laura Elsbree R | 20 | Seat not up for election |
| Williamson | Barry VanNostrand R | 15 | Seat not up for election |
| Wolcott | Lynn Chatfield R | 9 | Unopposed Lynn Chatfield ROC |