California's 18th Congressional District (CA-18)

Last updated Oct 1, 2026 · 6 sources

Zoe Lofgren, a Democrat, has represented the district since 2023.

The district includes all of San Benito County and parts of Monterey, Santa Clara, and Santa Cruz counties.

According to the Census Bureau's 2020–2024 American Community Survey 5-year estimates, the district has a population of 753,842, a median household income of $103,584, and a median age of 34.8. Of residents 25 and older, 24.4% hold a bachelor's degree or higher.

Representative

Zoe Lofgren

U.S. Representative for California's 18th District · Democrat

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2026 redistricting

California uses a new congressional map in 2026: AB 604 (Proposition 50), approved by voters Nov 4, 2025.

The 2026 election for CA-18 uses the new map's CA-18; the map on this page shows the district as currently drawn (119th Congress).

Source · All 2026 redistricting changes

2026 election

Lofgren has filed with the FEC to run for this seat in 2026. 4 candidates for the seat have reported receipts to the FEC.

4 candidates have reported raising money for the 2026 CA-18 race to the FEC.

Election Day: Tuesday, November 3, 2026

Candidates for CA-18 in 2026 who reported raising money to the FEC
Candidate	Party	Raised	Cash on hand	Through
Zoe Lofgren (incumbent)	Democratic	$1,721,916	$643,341	Jun 30
Christopher Demers	No party affiliation	$109,850	$31,757	Jun 30
Shane Lewis	Republican	$60,180	$3,307	Jun 30
Luis Antonio Acevedo-Arreguin	Democratic	$18,369	$8,494	Jun 30