1986Final results
1986 election for California Assembly District 12
California State Assembly · California
Tom Bates (D) won with 72.1% of the vote, defeating Jerald H. Udinsky (R) by 47.9 points.
Tom BatesDemocrat · winner · incumbent
72.1%91,581
Jerald H. UdinskyRepublican
24.2%30,721
Emma MarPeace and Freedom
2.2%2,812
William McCordLibertarian
1.5%1,888
127,002 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
The candidates
Tom Bates (D)Jerald H. Udinsky (R)
Also on the ballot: Emma Mar (Peace and Freedom), 2.2%; William McCord (Libertarian), 1.5%