93723 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 57% of adults in 93723 typically vote, near the U.S. average of about 62%. Among adults in 93723, ~25% vote Democratic, ~32% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How 93723 compares
Among zip codes within 15 miles, 93723 leans more Republican than 21 of 26 neighbors.
93723 runs about 35 points more Republican than California as a whole. California leans Democratic overall, while 93723 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 93723. The northwest side is the most Republican-leaning (R+49) and the northeast side is the least Republican-leaning (R+6), a spread of about 43 points.
Why 93723 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 93723, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 85% of households in 93723 are family households, about 18 points above the U.S. average of 67%. 93723 runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion, developed land, and voter turnout
Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as 93723, CA does.
Why turnout in 93723 looks the way it does
Crowded housing lines up with lower turnout. About 11% of homes in 93723 have more than one occupant per room, above 97% 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.