2026 results · California · California 1st District

Mike McGuire, the Democrat, flips California's 1st District

Kamala Harris carried the district by 12.3 points in 2024; this year's count is a 1.8-point move toward the Republicans. The Republicans held the seat before the election. California redrew this district for 2026, and on its new lines Kamala Harris carried it by 12.3 points in 2024: part of this gain comes from the map, not only from the vote.

California 1st District: votes counted for each candidate
Candidate	Votes	Share	Share of the vote
Mike McGuireDemocrat	97,294	55.2%
James GallagherRepublican, incumbent	78,852	44.8%

Called by Call the Map, Nov 4, 4:49 PM EST · 74% counted.

About 74% of the expected vote counted176,146 votesCount last changed Nov 7, 12:48 PM EST · checked Nov 7, 4:59 PM ESTSource: the official state and county counts, gathered by civicAPI

The map

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About the seat

California's 1st District takes in all or part of 9 counties. The Republicans held it before this election. Its voters went D+12.3 for president in 2024. Its move from that vote, 1.8 points toward the Republicans, ranks 42 of 42 among the state's districts, counting from the largest move toward the Democrats.

2024 president: D+12.3
2024 House vote on these lines: D+9.6
Move from 2024, rank in state: 42 of 42

Sonoma County34%
Butte County33%
Tehama County10%
Mendocino County6%
Lassen County5%
Plumas County5%
Lake County4%
Glenn County3%
1 more1%

Shares are of the votes counted this year. The district was redrawn for 2026: its 2024 House figure is that year's House vote re-added onto the new lines precinct by precinct, an estimate.

What the count shows

Added together, the 9 counties compared moved 1.9 points toward the Republicans from the 2024 presidential vote.

The counties compared cast 52% as many votes as in 2024, from 81% in Plumas County to 30% in Lake County.

Lake County moved most: R+0.1 for president in 2024, D+12.9 this year

The 8 counties with the largest moves from the 2024 presidential vote, among those with 2,000 or more votes for president in 2024 and a quarter of that counted. Each line runs from the 2024 margin to this year’s.

CountyR+60EvenD+60Move

Lake County7,043 votes13.0 pts → D

Mendocino County10,391 votes12.9 pts → D

Sonoma County59,199 votes6.8 pts → D

Tehama County16,889 votes4.8 pts → D

Plumas County8,061 votes2.4 pts → D

Lassen County8,656 votes0.7 pts → D

Butte County58,868 votes0.7 pts → R

Glenn County5,559 votes0.6 pts → R

2024 president 2026

Sonoma County added 33,378 net votes for Gallagher against the 2024 margin

Across the 9 counties compared, the margin moved by 23,421 votes toward Gallagher: this year’s lead in votes against the 2024 presidential lead in votes, county by county. The figure counts voters who changed sides and differences in who turned out alike; the count cannot tell them apart.

Sonoma County+33,378 Gallagher
Tehama County+4,623 McGuire
Glenn County+1,672 McGuire
Lassen County+1,541 McGuire
Lake County+924 McGuire
Butte County+742 McGuire
Plumas County+528 McGuire
Mendocino County+165 Gallagher

1 county Donald Trump carried in 2024 is led by McGuire this year

Striped on the map above. Largest first.

Lake CountyR+0.1D+12.9

California’s ballot

All of California’s results The state legislature Ballot measures

The seats that changed party

StatewideDemocrats won 6 of California's 12 statewide races and lead 5 more.

won leads, still counting changed party. Margins are the leader’s share minus the runner-up’s, in points.

Every count on this page is the official count, from the state and its counties. Counts are unofficial until the state certifies them. The 2024 comparison is the presidential vote, Kamala Harris against Donald Trump, on the same ground. Margins are the Democrat minus the Republican, in points of all votes.