93634 leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 67% of adults in 93634 typically vote, near the U.S. average of about 62%. Among adults in 93634, ~24% vote Democratic, ~43% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 93634 compares
93634 sits in a sparsely populated area with few comparable zip codes nearby.
93634 runs about 48 points more Republican than California as a whole. California leans Democratic overall, while 93634 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93634. The southeast side is the most Republican-leaning (R+44) and the northwest side is the least Republican-leaning (R+17), a spread of about 27 points.
Why 93634 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 93634, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in 93634 live in densely developed areas, about 56 points below the California average of 58%. 93634 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Never-married share, developed land, and voter turnout
Places that combine a low never-married share and a rural land-use pattern tend to turn out at a higher rate, as 93634, CA does.
Why turnout in 93634 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 93634 have completed high school, about 11 points above the California average of 86%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
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.