93651 leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 67% of adults in 93651 typically vote, near the U.S. average of about 62%. Among adults in 93651, ~18% vote Democratic, ~49% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 93651 compares
Among zip codes within 15 miles, 93651 leans more Republican than 6 of 7 neighbors.
93651 runs about 66 points more Republican than California as a whole. California leans Democratic overall, while 93651 is one of the few Republican-leaning pockets.
Why 93651 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 93651, not a ranked or complete list of what matters most.
93651 votes against the grain of California. California leans Democratic overall, while 93651 runs about 66 points more Republican.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 93651, CA sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 93651 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 93651 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in 93651 have completed high school, above 84% 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.