2026 results · California · California 18th District

Zoe Lofgren, the Democrat, wins re-election in California's 18th District

Kamala Harris carried the district by 28.6 points in 2024; this year's count is a 15.6-point move toward the Democrats.

California 18th District: votes counted for each candidate
Candidate	Votes	Share	Share of the vote
Zoe LofgrenDemocrat, incumbent	93,855	72.1%
Shane LewisRepublican	36,290	27.9%

Called by Call the Map, Nov 4, 4:49 PM EST · 79% counted.

About 79% of the expected vote counted130,145 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 18th District takes in all or part of 6 counties. The Democrats held it before this election. Its voters went D+28.6 for president in 2024. Its move from that vote, 15.6 points toward the Democrats, ranks 19 of 42 among the state's districts, counting from the largest move toward the Democrats.

2024 president: D+28.6
2024 House vote on these lines: D+29.5
Move from 2024, rank in state: 19 of 42

Santa Clara County47%
Monterey County32%
San Benito County10%
Santa Cruz County9%
Fresno County2%
Kings County1%

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 6 counties compared moved 15.6 points toward the Democrats from the 2024 presidential vote.

The counties compared cast 55% as many votes as in 2024, from 68% in Santa Cruz County to 46% in San Benito County.

Monterey County moved most: D+22.8 for president in 2024, D+47.3 this year

The 5 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+70EvenD+70Move

Monterey County41,839 votes24.6 pts → D

Fresno County2,041 votes23.9 pts → D

Santa Cruz County11,387 votes19.5 pts → D

San Benito County12,768 votes13.0 pts → D

Santa Clara County61,069 votes9.1 pts → D

2024 president 2026

Santa Clara County added 15,864 net votes for Lewis against the 2024 margin

Across the 6 counties compared, the margin moved by 9,986 votes toward Lewis: 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.

Santa Clara County+15,864 Lewis
Monterey County+4,848 Lofgren
Fresno County+782 Lofgren
Kings County+452 Lofgren
San Benito County+212 Lewis
Santa Cruz County+8 Lofgren

2 counties Donald Trump carried in 2024 are led by Lofgren this year

Striped on the map above. Largest first; the 1 largest of 2, leaving out any under 2,000 votes in 2024.

Fresno CountyR+23.1D+0.8

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.