Diane Papan
Democrat
Two-term Assemblymember (first elected 2022; reelected 2024) and former mayor and councilmember of the City of San Mateo (council 2015–2022). Chairs the Assembly Committee on Water, Parks & Wildlife; also serves on Transportation, Judiciary, Governmental Organization, and Environmental Safety. Daughter of former Assembly Majority Leader Lou Papan. Holds a BA from UCLA and a JD from UC Hastings.
Race History
California State Assembly — District 21
June 2026