Seats worth 120 weighted votes are contested this year. Democrats would need to flip 249 weighted votes to gain control, so control can't change in 2026.
| Seat | Current member | Weighted vote | 2026 race |
|---|---|---|---|
| Covert | Michael Reynolds R | 50 | Contested Brad Gottshall D vs. Michael Reynolds RC |
| Fayette | Jeffrey Trout R | 85 | Seat not up for election |
| Junius | C. Ernest (Ernie) Brownell R | 32 | Unopposed C. Ernest Brownell R |
| Lodi | Lucas Latini R | 35 | Seat not up for election |
| Ovid | Joseph Borst R | 54 | Seat not up for election |
| Romulus | David Hayes R | 50 | Seat not up for election |
| Seneca Falls (county supervisor 1) | Paul Kronenwetter R | 70 | Contested Claire Ludovico DO vs. Jennifer Wick DO vs. Paul Kronenwetter RC vs. Kenneth Hilkert RC |
| Seneca Falls (county supervisor 2) | Jennifer Kuplinski-Wick D | 70 | Contested Claire Ludovico DO vs. Jennifer Wick DO vs. Paul Kronenwetter RC vs. Kenneth Hilkert RC |
| Seneca Falls (town) | Frank Schmitter R | 70 | Seat not up for election |
| Tyre | Elizabeth Partee R | 24 | Seat not up for election |
| Varick | Robert W. Hayssen R | 39 | Seat not up for election |
| Waterloo (county supervisor 1) | Michael Enslow R | 57 | Unopposed Robert Shipley R, Michael Enslow R |
| Waterloo (county supervisor 2) | Robert Shipley R | 57 | Unopposed Robert Shipley R, Michael Enslow R |
| Waterloo (town) | Ted Young D | 57 | Seat not up for election |