California’s congressional contests are producing battles on nearly every political front: Republicans challenging Republicans, Democrats facing off against fellow Democrats, red districts turning blue and generational differences shaping the debate.
After months of escalating spending and sharp accusations, the stakes are enormous. The outcome of Tuesday’s election could help determine which party controls the U.S. House of Representatives.
Here are eight California House races drawing particular attention.
San Francisco: Connie Chan (D) vs. Scott Wiener (D)
Former House Speaker Nancy Pelosi has chosen the candidate she wants to succeed her, but the decision ultimately belongs to San Francisco voters.
Pelosi is supporting Supervisor Connie Chan, a labor-backed candidate campaigning on tenant protections and expanded public housing. The California Democratic Party, however, has endorsed state Sen. Scott Wiener, who built his Sacramento profile around housing construction and LGBTQ+ rights.
In the heart of the technology industry, San Francisco’s next member of Congress could play a significant role in the national debate over artificial intelligence regulation.
A group supported by AI company Anthropic has directed $3.5 million to a super PAC backing Wiener. Anthropic maintains that its contributions were limited to education and policy efforts, while the group says funds from other donors were used to support Wiener’s campaign.
Central Valley: Rep. David Valadao (R) vs. Randy Villegas (D)
Republican Rep. David Valadao has repeatedly fended off Democratic challengers by centering his campaign on the concerns of California’s agricultural communities and maintaining some independence from President Donald Trump.
Valadao voted to impeach Trump following the Jan. 6 attack on the Capitol, but his support for the president’s “One Big Beautiful Bill” has given progressive Democrat Randy Villegas a powerful line of attack. About six in 10 residents of the district depend on Medicaid, and the legislation is projected to reduce federal spending on the program.
A dairy farmer, Valadao attended College of the Sequoias, where Villegas now teaches political science. Villegas, who is the son of Mexican immigrants and grew up receiving public assistance, is running on a Medicare for All platform.
The 22nd Congressional District was redrawn after voters approved Proposition 50 in 2025, creating a fresh opportunity for Democrats to challenge Valadao’s long-running hold on the seat.
Orange County–Inland Empire: Rep. Ken Calvert (R) vs. Rep. Young Kim (R)
A new congressional map drawn by California Democrats has also forced Republican Reps. Ken Calvert and Young Kim into a direct contest, turning the race into a political game of musical chairs.
The two sitting lawmakers are competing for the 40th District, which covers portions of Orange and Riverside counties.
Trump has endorsed Calvert, who is presenting himself as the more reliable conservative. He has defended the administration’s immigration crackdown and called for federal measures aimed at increasing oil and gas production while reducing costs. Kim, a former businesswoman and California assemblymember born in South Korea, entered Congress in 2021 and is offering voters a more moderate Republican alternative.
The bitter campaign has revived past headlines involving a sex scandal tied to Calvert. Kim, meanwhile, faced criticism after donating campaign money connected to a Chinese businessman under FBI investigation.
Immigration could prove decisive. Kim supports the bipartisan Dignity Act, which combines tougher border enforcement with a pathway to legal status for some undocumented immigrants.
Sacramento suburbs: Rep. Kevin Kiley (I) vs. Richard Pan (D)
Kevin Kiley has left the Republican Party to become an independent, but Richard Pan’s campaign argues that Kiley nonetheless voted with Trump 98% of the time.
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Pan, a former Democratic state senator, is counting on a newly redrawn district covering parts of Sacramento, Placer and Yolo counties to improve his chances.
Their sharpest policy differences emerge over health care. Pan wrote California’s strict school vaccination laws, while Kiley has opposed vaccine mandates and said pandemic-era restrictions weakened public trust. Pan has also backed extending Medi-Cal coverage to undocumented immigrants.
Pan’s campaign faced backlash after local reporters were barred from an event featuring former Vice President Kamala Harris.
Wine Country: Rep. Mike Thompson (D) vs. Eric Jones (D)
Rep. Mike Thompson is facing a fellow Democrat in Eric Jones who wants Washington to stop rewarding longevity.
Thompson, 75, is a Vietnam veteran and senior member of the Ways and Means Committee. Jones, 35, is a former venture capitalist selling sweeping change across a district stretching from wine country into the Sacramento Valley.
Jones proposes eliminating federal income tax on the first $150,000 earned and imposing 12-year congressional term limits. He has rejected corporate PAC donations, although his campaign relies heavily on family wealth.
The race may hinge on whether voters are ready for change or prioritize someone with more institutional knowledge.
Sacramento: Rep. Doris Matsui (D) vs. Mai Vang (D)
Doris Matsui is a moderate Democrat and one of the oldest members of Congress at age 82, while her far-left challenger Mai Vang has focused on fighting Trump on all fronts, particularly immigration.
Matsui succeeded her late husband, Robert, in 2005 and points to semiconductor legislation and more than $4 billion in flood-prevention funding as proof of her effectiveness. She was accused of propping up a GOP candidate in the primary to coast to reelection.
Vang, a Sacramento councilmember and daughter of Hmong refugees, grew up the eldest of 16 children. Her platform includes Medicare for All, stronger assistance for working families and a more confrontational approach to entrenched power.
Vang has made headlines for turning her back on the flag during the Pledge of Allegiance at Sacramento City Council meetings, and her recent events with streamer Hasan Piker are evidence of the generational divide between the two Democrats.
Los Angeles: Rep. Jimmy Gomez (D) vs. Angela Gonzales-Torres (D)
Rep. Jimmy Gomez is fighting a challenger to his left — and an ethics cloud hanging over his reelection.
The House Ethics Committee is investigating allegations of sexual misconduct, including inappropriate sexual contact with a House staffer. Gomez denies wrongdoing, saying his actions were consensual and violated neither the law nor House rules.
Angela Gonzales-Torres, a former Highland Park Neighborhood Council member backed by Justice Democrats and the Los Angeles chapter of the Democratic Socialists of America, is campaigning on Medicare for All, free child care and abolishing ICE.
Their differences include U.S. support for Israel and Gomez’s acceptance of pro-Israel political backing.
Central Valley: Rep. Adam Gray (D) vs. Kevin Lincoln (R)
Adam Gray knows the difference between a seat in Congress and a concession speech: 187 votes. That was the Democrat’s winning margin in 2024.
But he faces a tough challenge from former Stockton Mayor Kevin Lincoln, a Republican and Marine veteran who is trying to send Gray home after just one term. Republican-aligned groups have poured millions into the contest despite redistricting that improved the Democrat’s position.
Lincoln, who was endorsed by Trump, has focused on Gray’s support for California’s 2017 gas-tax increase while also promising lower costs, stronger border security and greater support for law enforcement. Gray has emphasized bipartisan work on water, agriculture and health care, with an endorsement from the California Farm Bureau bolstering his pitch.