On November 8, 2022, 88 of the nation’s 99 state legislative chambers held regularly-scheduled elections for 6,278 seats. Across those races, the average margin of victory was 27.7 percentage points. This was the highest even-year average margin of victory of the last three even-year elections. The average state legislative margin of victory in 2020 was 27.0 percentage points, and in 2018 it was 25.8 percentage points.
Democrats gained control of four chambers in the 2022 elections: the Michigan House and Senate, Minnesota Senate, and Pennsylvania House. The average margin of victory in each of these chambers was lower than the national average:
- Michigan House: 26.9
- Michigan Senate: 25.2
- Minnesota Senate: 26.7
- Pennsylvania House: 27.6