2020Final results
2020 election for California's 3rd District
U.S. House · California
John Garamendi (D) won with 54.7% of the vote, defeating Tamika Hamilton (R) by 9.3 points.
John GaramendiDemocrat · winner
54.7%176,043
Tamika HamiltonRepublican
45.3%145,945
321,988 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
Money in this race
Each line compares the two campaigns on one scale.
John GaramendiTamika Hamilton
$1.1M
Raised by the campaign
$397.1K
$717.1K
Spent by the campaign
$384.6K
$1.1M
Cash on hand
$12.5K
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020