2018Final results
2018 election for California Senate District 18
California State Senate · California
Bob Hertzberg (D) won with 78.1% of the vote, defeating Rudy Melendez (R) by 56.2 points.
Bob HertzbergDemocrat · winner · incumbent
78.1%195,623
Rudy MelendezRepublican
21.9%54,888
250,511 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