1978Final results
1978 election for California Assembly District 4
California State Assembly · California
Thomas M. Hannigan (D) won with 62.4% of the vote, defeating Jeff Ketelson (R) by 24.8 points.
Thomas M. HanniganDemocrat · winner
62.4%57,485
Jeff KetelsonRepublican
37.6%34,627
92,112 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 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET