Monte Sereno, CA Political Map | Democrat & Republican Areas in Monte Sereno

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

Monte Sereno leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.

 

About 81% of adults in Monte Sereno typically vote, above the U.S. average of about 62%. Among adults in Monte Sereno, ~54% vote Democratic, ~27% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.

How Monte Sereno compares

Among cities within 25 miles, Monte Sereno leans more Democratic than 19 of 56 neighbors.

Monte Sereno runs about 14 points more Democratic than California as a whole.

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

Areas with high college attainment vote Democratic. About 82% of adults in Monte Sereno hold a bachelor's degree, about 54 points above the U.S. average of 28%. Dense areas vote Democratic, and Monte Sereno sits in the top fifth on density (about 85%, above 95% of cities).

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Monte Sereno, CA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Monte Sereno looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Monte Sereno 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 79%, about 19 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in Monte Sereno own their home, compared to around 66% in nearby cities. High high-school completion lines up with higher turnout, and about 98% of adults in Monte Sereno have completed high school, above 97% of cities. 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.