Legislative Seats by Party

Every state legislative seat, counted by party, year over year — nationally and in each state.

Updated — · July 1 snapshot each year · party counts reflect caucus alignment · back to the Scoreboard →

Net change in each party’s seats across the year spanning each November election — computed seat-by-seat, counting only seats tracked in both years (so specials, party switches, and the November results all show; record-coverage changes never do).