93545 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 60% of adults in 93545 typically vote, near the U.S. average of about 62%. Among adults in 93545, ~28% vote Democratic, ~32% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 93545 compares
93545 runs about 26 points more Republican than California as a whole. California leans Democratic overall, while 93545 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93545. The southeast side is the most split-leaning (R+15) and the northeast side is the least split-leaning (R+2), a spread of about 13 points.
Why 93545 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 93545, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in 93545 live in densely developed areas, about 56 points below the California average of 58%. Low college attainment predicts Republican voting, and 93545 sits in the bottom quarter (about 15%, below 80% of zip codes). 93545 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; 93545, CA sits in the bottom quarter nationally on this measure.
Why turnout in 93545 looks the way it does
Renters vote less often than owners. About 52% of households in 93545 rent, about 27 points above the U.S. average of 25%. 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.