Winterhaven leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 48% of adults in Winterhaven typically vote, below the U.S. average of about 62%. Among adults in Winterhaven, ~29% vote Democratic, ~18% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How Winterhaven compares
Among cities within 25 miles, Winterhaven leans more Democratic than 10 of 11 neighbors.
Winterhaven runs about 4 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Winterhaven. The east side runs the most Democratic (D+34) and the southwest side runs the most Republican (R+11), a spread of about 45 points.
Why Winterhaven leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Winterhaven, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 53% of adults in Winterhaven have never been married, well above similar-sized cities (around 30%).
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Winterhaven, CA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Winterhaven looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Winterhaven is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 41%, about 21 points below the California average of 62%. Renters vote less often than owners, and about 37% of households in Winterhaven rent, above 93% of cities. High food insecurity lines up with lower turnout, and about 37% of adults in Winterhaven report food insecurity, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Avenue B and C, AZ D+5
- Bard, CA D+27
- Yuma, AZ R+9
- Laguna, AZ R+46
- Somerton, AZ D+8
- Fortuna Foothills, AZ R+32
- Dome, AZ R+41
- Fishers Landing, AZ R+46
- Gadsden, AZ D+8
- San Luis, AZ D+5
Cities with Similar Populations
- Osceola Mills, PA R+50
- Ellsworth Afb, SD R+26
- Concord, GA R+67
- Loma, CO R+54
- Peachland, NC R+54
- Trinidad, CA D+47
- Nicholson, PA R+40
- Maidens, VA R+26
- Red Rock, AZ R+43
- Belmont, MS R+78
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Sources and methodology
Precinct-level voting records used to fit the model come from California Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.