2020Final results
2020 election for California's 15th District
U.S. House · California
Eric Swalwell (D) won with 70.9% of the vote, defeating Alison Hayden (R) by 41.8 points.
Eric SwalwellDemocrat · winner
70.9%242,991
Alison HaydenRepublican
29.1%99,710
342,701 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.
Eric SwalwellAlison Hayden
$2.9M
Raised by the campaign
$0
$4.1M
Spent by the campaign
$8.4K
$502.9K
Cash on hand
$5.7K
Campaign money: FEC, through Dec 31, 2020; FEC, through Nov 3, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020