2020Final results
2020 election for California's 5th District
U.S. House · California
Mike Thompson (D) won with 76.1% of the vote, defeating Scott Giblin (R) by 52.2 points.
Mike ThompsonDemocrat · winner
76.1%271,233
Scott GiblinRepublican
23.9%85,227
356,460 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.
Mike ThompsonScott Giblin
$2.2M
Raised by the campaign
$0
$2M
Spent by the campaign
$594
$1.7M
Cash on hand
$0
Campaign money: FEC, through Dec 31, 2020; FEC, through Sep 30, 2019.
Source: FEC campaign filingsUpdated Dec 31, 2020