1986Final results
1986 election for California Assembly District 30
California State Assembly · California
Jim Costa (D) won with 67.3% of the vote, defeating Blaine T. Anderson (R) by 34.6 points.
Jim CostaDemocrat · winner · incumbent
67.3%41,271
Blaine T. AndersonRepublican
32.7%20,058
61,329 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1986
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET