2010Final results
2010 election for California's 46th District
U.S. House · California
Dana Rohrabacher (R) won with 62.2% of the vote, defeating Ken Arnold (D) by 24.4 points.
Dana RohrabacherRepublican · winner
62.2%139,822
Ken ArnoldDemocrat
37.8%84,940
224,782 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.
Ken ArnoldDana Rohrabacher
$18.4K
Raised by the campaign
$404.3K
$18.1K
Spent by the campaign
$382.3K
$318
Cash on hand
$279.4K
Campaign money: FEC, through Dec 31, 2010.
Source: FEC campaign filingsUpdated Dec 31, 2010