 
The 2024 California's 20th congressional district special election was held on March 19, 2024, with a runoff on May 21 because no candidate received more than 50% of the vote in the first round. It elected a new member of the United States House of Representatives to replace Kevin McCarthy, who resigned on December 31, 2023, following his removal as speaker of the House.
Two Republicans, Tulare County Sheriff Mike Boudreaux and state assemblyman Vince Fong, advanced to the runoff. Boudreaux narrowly edged out the leading Democrat, teacher Marisa Wood, to claim the second runoff spot. Fong won the runoff with more than 60% of the vote and won a full term in November 2024; Boudreaux dropped out of the November race but his name remained on the ballot.
Background.
At the start of the 118th Congress, Republicans' narrow majority garnered from the 2022 elections allowed McCarthy, the then-leader of the House Republican Conference, to be elected speaker at the start of the session. However, opposition from the far-right Freedom Caucus prolonged the election, leading to fifteen rounds of voting that eventually resulted in McCarthy's election. The caucus continued its opposition of McCarthy during his tenure, threatening a government shutdown following his involvement in negotiations for the federal budget. When McCarthy led the House in passing a continuing resolution, relying on votes from the Democratic Caucus to effectively avert a shutdown, Representative Matt Gaetz of Florida filed a motion to vacate the speakership. On October 3, the motion narrowly passed, and McCarthy was removed from the office of Speaker of the House, the first instance of which in American history.
Two months after his political defeat, McCarthy published an op-ed with "The Wall Street Journal" announcing his resignation from Congress, highlighting his accomplishments and stating that his work is "only getting started." His announcement came while House Republicans' majority had already lowered since the expulsion of Representative George Santos of New York, making the legislative agenda of the new speaker, Mike Johnson of Louisiana, more difficult to pass. As such, Republicans see both the special and general House elections in 2024 as crucial to maintaining their influence in Congress. Nonetheless, this district is considered safely Republican: McCarthy won 67.2% of the vote in 2022 against Democratic challenger Marisa Wood.
Nonpartisan blanket primary.
Campaign.
Vince Fong, an assemblymember who was considered a protégé of McCarthy, announced that he would be running for the seat after initially declining to run. He was deemed ineligible to run in the 2024 Presidential Primary as the deadline already passed (but not ineligible for the special election) by California Secretary of State Shirley Weber due to Fong having already qualified to be on that ballot for re-election in the California State Assembly, which is prohibited by state law. Fong sued the state, with Superior Court judge Shelleyanne W. L. Chang ruling in favor of Fong and allowing him to run in the election. In response to the ruling, Weber appealed the ruling and assemblymember Wendy Carrillo introduced a bill that would prevent candidates from running for two elected offices at the same time. In January 2024, Weber filed a petition to a state appeals court to erase the ruling and prohibit Fong from running, while assemblywoman Gail Pellerin introduced a bill to bar candidates from filing to run for more than one office during the same election.
Endorsements.
 ;templatestyles src="Endorsements box/styles.css"/ ;Mike Boudreaux (R)
U.S. executive branch officials
U.S. representatives
State legislators
Individuals 
Organizations
Labor unions
Newspapers
 ;templatestyles src="Endorsements box/styles.css"/ ;Vince Fong (R)
Executive branch officials
U.S. representatives
Local officials
Organizations
Labor unions
 ;templatestyles src="Endorsements box/styles.css"/ ;Marisa Wood (D)
Individuals
References.
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