Beresford, San Mateo, CA Political Map | Democrat & Republican Areas in Beresford

Beresford is a Democratic stronghold. About 76% of voters here vote Democratic and 24% Republican.

 
Beresford, San Mateo, CA block-group political-lean map
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About 67% of adults in Beresford typically vote, near the U.S. average of about 62%. Among adults in Beresford, ~51% vote Democratic, ~16% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.

Beresford, San Mateo, CA block-group voter-turnout map
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How Beresford compares

Among neighborhoods within 5 miles, Beresford leans more Democratic than 8 of 12 neighbors.

Beresford runs about 32 points more Democratic than California as a whole.

Politics vary noticeably by block within Beresford. The northeast side is the most Democratic-leaning (D+60) and the west side is the least Democratic-leaning (D+40), a spread of about 19 points.

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

Areas with high college attainment vote Democratic. About 66% of adults in Beresford hold a bachelor's degree, about 38 points above the U.S. average of 28%.

Population density, never-married share, and Democratic lean

Places that combine high population density and a low never-married share tend to lean Democratic, as Beresford, San Mateo, CA does.

Why turnout in Beresford looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Beresford is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 72%, about 12 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.

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.