Chula Vista, CA Political Map | Democrat & Republican Areas in Chula Vista

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

Chula Vista leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.

 

About 59% of adults in Chula Vista typically vote, near the U.S. average of about 62%. Among adults in Chula Vista, ~35% vote Democratic, ~24% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.

How Chula Vista compares

Among cities within 25 miles, Chula Vista leans more Democratic than 21 of 26 neighbors.

Politically, Chula Vista sits close to the rest of California.

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

Dense areas vote Democratic. About 92% of residents in Chula Vista live in densely developed areas, about 56 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Chula Vista sits in the top quarter (about 33%, above 79% of cities). A high never-married share predicts Democratic voting, and about 35% of adults in Chula Vista have never been married, above 88% of cities.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Chula Vista, 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 Chula Vista looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Chula Vista is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 39% of households in Chula Vista rent, above 94% of cities. Crowded housing lines up with lower turnout, and about 10% of homes in Chula Vista have more than one occupant per room, above 97% of cities. 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.