CA-21

Name: CA-21 Election 2024
Start: 2024-11-03
Location: California

California — U.S. House District 21

Nov 3, 2024California2 candidates

Challengers

Jim Costa

(D)Won

Democratic U.S. Representative for California's 21st district; veteran legislator with decades of service in the Central Valley.

Vote share52.6%

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Michael Maher

(R)Lost

Vote share47.4%

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Campaign finance data not yet available for this race.

Recent Coverage

Costa eyes run for top Democrat on House Ag, shaking up already competitive race

POLITICOSep 16, 2026

informational

California Sens. Padilla and Schiff lead bipartisan push to block Yosemite deal

The TribuneSep 15, 2026

positive

Election History

2024

2022

2020

2018

2026

Jim Costa(D)N/A

Kyle Kirkland(R)N/A

2024

Jim Costa(D)52.6%

Michael Maher(R)47.4%

2022

Jim Costa(D)54.2%

Michael Maher(R)45.8%

2020

David G Valadao(R)50.4%

TJ Cox(D)49.6%

2018

TJ Cox(D)50.4%

David Valadao(R)49.6%

Campaign finance data sourced from FEC filings. Election results from MIT Election Lab. ChamberLight is not an official government source.

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