Marina, San Diego, CA Political Map | Democrat & Republican Areas in Marina

Marina leans heavily Democratic by roughly 46 points: about 73% of voters vote Democratic and 27% Republican.

 
Marina, San Diego, CA block-group political-lean map
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About 64% of adults in Marina typically vote, near the U.S. average of about 62%. Among adults in Marina, ~47% vote Democratic, ~17% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.

Marina, San Diego, CA block-group voter-turnout map
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How Marina compares

Among neighborhoods within 5 miles, Marina leans more Democratic than 23 of 31 neighbors.

Marina runs about 25 points more Democratic than California as a whole.

Politics vary noticeably by block within Marina. The southeast side is the most Democratic-leaning (D+54) and the north side is the least Democratic-leaning (D+37), a spread of about 17 points.

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

Areas with high college attainment vote Democratic. About 68% of adults in Marina hold a bachelor's degree, about 40 points above the U.S. average of 28%.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Marina, San Diego, CA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Marina looks the way it does

Turnout in Marina 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.

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.