PolitiFinder

2018 California U.S. House District 45 Election

California · 2 candidates · See every 2018 U.S. House race

Who won the 2018 California U.S. House District 45 Election?

Katie Porter won the 2018 California U.S. House District 45 Election. Katie Porter received 158,906 popular votes (52.05%). The main challenger was Mimi Walters (47.95%).

See the full head-to-head between Porter and Walters

Porter +4.1 pts · won by 12,523 votes
Katie PorterDemocraticWINNER52.05%
158,906 votes
Mimi WaltersRepublican47.95%
146,383 votes
Popular-vote totals for U.S. House elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.