Democrats flipped at least three Republican-held U.S. House seats in California on Nov. 4, 2026, propelled by voter disapproval of President Donald Trump and a redistricting plan approved by state voters that was designed to add up to five Democratic seats, KQED reported. The Associated Press called control of the House decisively for the Democrats on Tuesday night, meaning the party did not need California to retake the majority.
Proposition 50 Redrew the Lines Before Voters Cast Ballots
Under the new maps approved by Proposition 50, the 41st Congressional District was transformed from a competitive Inland Empire seat held by Republican Rep. Ken Calvert into a safe Democratic district covering parts of Los Angeles and Orange counties. After Calvert chose to run in another district, Democratic Rep. Linda Sanchez easily captured the seat Tuesday night. In Northern California, the 1st Congressional District was redrawn to bring in more than 100,000 voters from reliably Democratic Sonoma County, where Democratic state Sen. Mike McGuire easily defeated incumbent Republican Rep. James Gallagher.
“Folks from every corner of Northern California spoke up, turned out, and delivered an overwhelming message — they’re tired of the constant chaos and an economy that works against them,” McGuire said in a statement.
The redistricting also reshuffled lines around Sacramento, prompting Republican Rep. Kevin Kiley to leave his party and run as an independent in a new district. Democrat Richard Pan, a physician and former state senator from the area, bested him in the 6th District.
San Diego’s Open 48th District Goes to a Democrat
Republican Rep. Darrell Issa decided not to run for reelection after his 48th District added Democratic-leaning terrain in Palm Springs and northern San Diego County. In the contest to replace him, Democrat Marni von Wilpert, a San Diego City Council member, claimed victory Tuesday night against Republican Jim Desmond, a San Diego County supervisor, even though the Associated Press had not yet called the race.
“Tonight the voters of this district are sending a clear message — they’re tired of a corrupt Congress and out of control costs and ready for a representative who will fight for them,” von Wilpert said in a statement.
Central Valley Races Show Eroding Republican Gains
The state’s most contested congressional battleground remained the Central Valley, where Republican gains made in 2024 in majority-Latino districts appeared to erode amid voter frustration over high prices. In the 13th Congressional District, which stretches from Stockton to Merced, Democratic Rep. Adam Gray led former Stockton Mayor Kevin Lincoln, a Republican, by more than 22 points Tuesday night. Gray ran a centrist campaign touting federal dollars he brought to Modesto and Merced, while Lincoln attacked Gray’s vote to raise the gas tax as a state Assembly member; both parties pulled television ad bookings in the final days as the outcome became clear.
Republicans had viewed Rep. David Valadao as the California incumbent best positioned to survive a Democratic wave, since he had lost the competitive seat only once, in 2018, and had voted to impeach Trump in 2021. His challenger, Villegas, bested an establishment-backed Democrat in the primary and rallied with Sen. Bernie Sanders and Rep. Alexandria Ocasio-Cortez in the closing weeks. Democratic committees spent $18.9 million to support Villegas while GOP groups spent $11.8 million backing Valadao — the 10th-highest outside spending of any House race nationwide, according to the California Target Book.
Why Affordability and Trump Approval Drove the Results
Eric McGhee, a senior fellow at the Public Policy Institute of California, said voter attitudes in the Central Valley reflected broader statewide trends. “Affordability is just a huge concern for people in that part of the state,” McGhee said. “A lot of people there think that the economy is not in the right direction.”
“Approval of Trump is very low pretty much everywhere in the state, but it’s in the low-30s range for those two competitive Central Valley districts,” McGhee said.
Questions Readers Are Asking About the California Results
Which California congressional districts did Democrats flip?
Democrats captured the 41st District with Linda Sanchez, the 1st District with Mike McGuire, and the 6th District with Richard Pan, and von Wilpert declared victory in the open 48th District. All four seats had been held or shaped by Republicans before the Proposition 50 redistricting.
Why did California redraw its congressional maps?
California voters approved Proposition 50 last year, a redistricting plan explicitly designed to add up to five Democratic seats by reshaping districts in the Inland Empire, Northern California, Sacramento, and San Diego.
How much money went into these races?
Outside groups spent heavily in the Central Valley contest, with Democratic committees putting $18.9 million behind Villegas and GOP groups spending $11.8 million for Valadao, making it the 10th-most expensive House race in outside spending nationwide, according to the California Target Book.
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