2018Final results
2018 election for California Senate District 36
California State Senate · California
Patricia C. Bates (R) won with 51.5% of the vote, defeating Marggie Castellano (D) by 3.1 points.
Patricia C. BatesRepublican · winner · incumbent
51.5%203,607
Marggie CastellanoDemocrat
48.5%191,392
394,999 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET