Three Rivers, CA Political Map | Democrat & Republican Areas in Three Rivers

Three Rivers leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.

 
Three Rivers, CA block-group political-lean map
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About 58% of adults in Three Rivers typically vote, near the U.S. average of about 62%. Among adults in Three Rivers, ~27% vote Democratic, ~31% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.

Three Rivers, CA block-group voter-turnout map
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How Three Rivers compares

Among cities within 25 miles, Three Rivers leans more Republican than 6 of 26 neighbors.

Three Rivers runs about 27 points more Republican than California as a whole. California leans Democratic overall, while Three Rivers is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Three Rivers. The southeast side is the most Republican-leaning (R+27) and the south side is the least Republican-leaning (R+4), a spread of about 23 points.

Why Three Rivers 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 Three Rivers, not a ranked or complete list of what matters most.

Rural areas vote Republican. About 2% of residents in Three Rivers live in densely developed areas, about 55 points below the California average of 58%. Three Rivers runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.

Developed land and Republican lean

Places with a rural land-use pattern tend to lean Republican; Three Rivers, CA sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Three Rivers looks the way it does

Renters vote less often than owners. About 28% of households in Three Rivers rent, above 80% of cities. Strong routine healthcare access lines up with higher turnout, and Three Rivers sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.

Cities with Similar Populations

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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.