U.S. House Model — California's 1st District
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Updated on November 4, 2024 at 03:19 PM Eastern Time.

After two years of a divided House, all House seats are up for election.
This model is updated daily, and uses state-level and national-level polls combined with fundamentals to create an accurate picture.
Overview
California's 1st District is rated as Safe Republican.

Candidates
The Democrats are represented by Rose Penelope Yee
while the Republicans are represented by Doug Lamalfa.

Chance of Victory
The Democrats have a 0.0% probability of winning this seat,
while the Republicans have a 100.0% probability of winning this seat.

Margin
Take a look at the brand spanking new margin calculator!
Name Margin
Partisan Lean R+20.9
National Environment D+1.7
Incumbency R+1.5
Fundraising R+4.3
Polling Average N/A
Demographic Adjustment D+0.1
R+22.0
This seat is projected to vote R+22.0
with 39.0% of voters voting for the Democrats
and 61.0% of voters voting for the Republicans.
Change Over Time
The changes in the Democratic and Republican probabilities to win this seat are displayed in the graph below.
Methodology
Rating Categories
Under 60%: a Tossup | 60% to 70%: Lean Democrat or Lean Republican | 70% to 95%: Likely Democrat or Likely Republican | 95% or above: Safe Democrat or Safe Republican
Data Sources
OpenSecrets | Redistricter | FiveThirtyEight | Dave's Redistricting | Wikimedia Commons | Wikipedia | Daily Kos | CA SoS Shirley Weber | WA SoS Steve Hobbs | Bokeh
Methodology Statement
You can read my methodology statement by clicking on this link, or you can view it directly in the website blog (the blog is broken though, for now.)
Download the Data