Among women's groups, EMILYs List endorsed the most and Winning for Women had the highest win rate in 2026

The number of candidates endorsed by women’s groups in 2026 congressional and gubernatorial primaries where no incumbent was on the primary ballot, and how often each group's endorsees won their primaries since 2020

Wins includes any candidate who won their partisan primary or advanced to the general election. In California and Washington, the top two primary finishers, regardless of party, advance to the general election. In Alaska, the top four advance. For 2024 and 2026, data excludes Louisiana House primaries. FiveThirtyEight did not track endorsements from Maggie's List in 2020.
Source: FiveThirtyEight, EMILYs List, Maggie's List, Winning for Women, news reports, state election results