2020Flipped from DemocraticFinal results
2020 election for California's 21st District
U.S. House · California
David Valadao (R) won with 50.4% of the vote, defeating TJ Cox (D) by 0.9 points, a seat Democrats won last time.
David ValadaoRepublican · winner
50.4%85,928
TJ CoxDemocrat
49.6%84,406
170,334 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.
TJ CoxDavid Valadao
$6.1M
Raised by the campaign
$4.1M
$6.1M
Spent by the campaign
$4M
$55.9K
Cash on hand
$155.8K
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020