93523 leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 35% of adults in 93523 typically vote, below the U.S. average of about 62%. Among adults in 93523, ~14% vote Democratic, ~21% Republican, and ~65% don't vote. The map below shows estimated turnout by block group.
How 93523 compares
Among zip codes within 15 miles, 93523 leans more Republican than 2 of 3 neighbors.
93523 runs about 41 points more Republican than California as a whole. California leans Democratic overall, while 93523 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93523. The northeast side is the most Republican-leaning (R+40) and the south side is the least Republican-leaning (R+12), a spread of about 29 points.
Why 93523 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 93523, not a ranked or complete list of what matters most.
93523 votes against the grain of California. California leans Democratic overall, while 93523 runs about 41 points more Republican. A high family-household share predicts Republican voting, and about 78% of households in 93523 are family households, above 87% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 93523, CA sits below 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 93523 looks the way it does
Renters vote less often than owners. About 81% of households in 93523 rent, about 56 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 95% of adults in 93523 have completed high school, above 76% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes 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.