North San Juan, CA Political Map | Democrat & Republican Areas in North San Juan

North San Juan leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.

 
North San Juan, CA block-group political-lean map
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About 79% of adults in North San Juan typically vote, above the U.S. average of about 62%. Among adults in North San Juan, ~43% vote Democratic, ~36% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.

North San Juan, CA block-group voter-turnout map
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Lower turnout Higher turnout
Colorblind friendly off

How North San Juan compares

Among cities within 25 miles, North San Juan leans more Democratic than 39 of 44 neighbors.

North San Juan runs about 13 points more Republican than California as a whole.

Politics vary noticeably by neighborhood within North San Juan. The south side runs the most Democratic (D+34) and the west side runs the most Republican (R+10), a spread of about 44 points.

Why North San Juan leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in North San Juan. The lean here lands roughly where demographic data alone would predict.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; North San Juan, CA sits above the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in North San Juan looks the way it does

Turnout in North San Juan sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.

Cities with Similar Populations

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.