University-San Bernardino, San Bernardino, CA Political Map | Democrat & Republican Areas in University-San Bernardino

By the BestNeighborhood data science team. Last updated May 2026.

University-San Bernardino leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.

 

About 40% of adults in University-San Bernardino typically vote, below the U.S. average of about 62%. Among adults in University-San Bernardino, ~26% vote Democratic, ~15% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.

How University-San Bernardino compares

Among neighborhoods within 5 miles, University-San Bernardino leans more Democratic than 22 of 26 neighbors.

University-San Bernardino runs about 8 points more Democratic than California as a whole.

Why University-San Bernardino leans the way it does

This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for University-San Bernardino, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in University-San Bernardino live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 61% of adults in University-San Bernardino have never been married, above 94% of neighborhoods.

Never-married share, developed land, and voter turnout

Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as University-San Bernardino, San Bernardino, CA does.

Why turnout in University-San Bernardino looks the way it does

Crowded housing lines up with lower turnout. About 13% of homes in University-San Bernardino have more than one occupant per room, above 95% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.

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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.