2025-2026 Regular Session · current members
California Senate
Democrats hold 29 of 40 seats, a two-thirds supermajority. The typical Democratic member saw 63% of their bills pass, against 22% for the typical Republican.
Majority 21⅔ 27
Republican 10Democratic 29Vacant 1
Senate districts
Boundaries from the U.S. Census Bureau's 2022 cartographic boundary files.
Color by
RepublicanDemocraticVacantClick a district to open its member’s profile.
Loyalty and legislative success
Each dot is a member. Further right means voting with their own party more often when the parties split; higher means more of their authored bills passed both chambers.
RepublicanDemocraticDot size: bills authored
Members
Statistics for the 2025-2026 Regular Session. Click a column to sort.





































