2012Final results
2012 election for California Assembly District 4
California State Assembly · California
Mariko Yamada (D) won with 62.5% of the vote, defeating John Munn (R) by 24.9 points.
Mariko YamadaDemocrat · winner · incumbent
62.5%108,081
John MunnRepublican
37.5%64,946
173,027 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 2012
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET