William O'Mara

U.S. House candidate
Home state
California
Party
Democratic
On the ballot
2020
0-1
RecordWin–Loss
Total Popular Votes
O'Mara157,773
Opponents210,274
1
Elections run

William O'Mara, a Democratic politician from California, ran once for U.S. office, losing the 2020 U.S. House election in California's District 42 to Ken Calvert, receiving 157,773 votes (42.87%).

Browse every U.S. House race in California's District 42 or all 2020 U.S. House races.

How many votes has William O'Mara received?

William O'Mara has received 157,773 popular votes across 1 U.S. election, with a career record of 0–1.

Election history

William O'Mara’s election history
YearOfficeResultVotesOpponent(s)
2020U.S. HouseCaliforniaLost157,77342.87%Ken Calvert
Cite this profile. PolitiFinder, “William O'Mara: election history & vote totals.” https://politifinder.com/p/william-o-mara. Accessed [date].

Compiled by PolitiFinder. Election results from official certified sources and the MIT Election Lab. See Data & sources and methodology. Data last verified July 28, 2026.