2010Final results
2010 election for California's 18th District
U.S. House · California
Dennis Cardoza (D) won with 58.5% of the vote, defeating Michael Clare Berryhill Sr. (R) by 17.0 points.
Dennis CardozaDemocrat · winner
58.5%72,853
Michael Clare Berryhill Sr.Republican
41.5%51,716
124,569 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 2010
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Dennis CardozaMichael Clare Berryhill Sr.
$1.2M
Raised by the campaign
$930.4K
$1.4M
Spent by the campaign
$929.7K
$47.5K
Cash on hand
$51
Campaign money: FEC, through Dec 31, 2010.
Source: FEC campaign filingsUpdated Dec 31, 2010