2010Final results
2010 election for California Assembly District 40
California State Assembly · California
Bob Blumenfield (D) won with 60.9% of the vote, defeating Dennis Deyoung (R) by 21.8 points.
Bob BlumenfieldDemocrat · winner · incumbent
60.9%56,208
Dennis DeyoungRepublican
39.1%36,069
92,277 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 2010
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET