California's midterm elections feature a series of closely watched House races marked by intense intra-party rivalries and significant political stakes for national control.

Several districts highlight clashes between establishment figures and progressive challengers, or between incumbent Republicans forced into electoral competition by redistricted maps. Money and accusations have been prevalent as candidates vie for voter support in contests that could influence the balance of power in the House of Representatives.

In San Francisco, the race for California's 12th Congressional District pits Supervisor Connie Chan against State Senator Scott Wiener. Former Speaker Nancy Pelosi has endorsed Chan, a labor ally focused on tenant protections and public housing. The state Democratic Party, however, backs Wiener, who champions housing expansion and LGBTQ+ rights. A super PAC backed by AI firm Anthropic has reportedly funneled significant funds into supporting Wiener, though the company states its donations were for educational purposes.

The 22nd Congressional District in the Central Valley sees Republican Rep. David Valadao challenged by Democrat Randy Villegas. Valadao, a dairy farmer who voted to impeach Donald Trump, faces scrutiny over his vote for a Republican healthcare bill that could affect Medicaid spending in the district. Villegas, a political science teacher and son of Mexican immigrants, advocates for Medicare for All and has emphasized his background of relying on public assistance.

Two Republican incumbents, Reps. Ken Calvert and Young Kim, are pitted against each other in the newly drawn 40th District, which spans parts of Orange and Riverside counties. Calvert, endorsed by Trump, runs on a conservative platform emphasizing border security and fossil fuel production. Kim, a former businesswoman, presents a more moderate Republican image and supports the bipartisan Dignity Act for immigration reform, which combines border enforcement with pathways to legal status.

In the Sacramento suburbs, independent Rep. Kevin Kiley faces Democrat Richard Pan for the 3rd Congressional District. Pan, a former state senator, highlights Kiley's voting record, noting his past alignment with Trump. Kiley's shift to independent status is contrasted with his previous Republican affiliation. Their policy disagreements are particularly sharp on healthcare, with Pan advocating for strict vaccination laws and expanded Medi-Cal, while Kiley opposes mandates.

The 11th Congressional District features a Democratic primary between incumbent Rep. Mike Thompson and challenger Eric Jones. Thompson, 75, a senior member of the Ways and Means Committee, faces Jones, 35, a former venture capitalist advocating for term limits and tax reform. The race may come down to a voter preference for established experience versus a call for change.

In Sacramento, Rep. Doris Matsui, 82, a moderate Democrat, is challenged by State Councilmember Mai Vang, who aligns with the progressive wing of the party. Matsui points to legislative achievements like semiconductor funding and flood prevention. Vang, the daughter of Hmong refugees, advocates for Medicare for All and a more confrontational approach to political power, drawing attention for her stance during the Pledge of Allegiance and recent campaign events with streamer Hasan Piker.

Los Angeles' 34th Congressional District sees incumbent Rep. Jimmy Gomez facing challenger Angela Gonzales-Torres. Gomez, a Democrat, is under investigation by the House Ethics Committee regarding allegations of sexual misconduct, which he denies. Gonzales-Torres, backed by progressive groups, campaigns on Medicare for All, free childcare, and abolishing ICE. Their differences extend to U.S. support for Israel.

Finally, the 13th Congressional District in the Central Valley pits Democratic incumbent Rep. Adam Gray against Republican former Stockton Mayor Kevin Lincoln. Gray won his previous election by a narrow margin. Lincoln, a Marine veteran endorsed by Trump, criticizes Gray's support for a past gas-tax increase and emphasizes border security and law enforcement. Gray highlights his bipartisan work on water, agriculture, and healthcare.