93668 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 49% of adults in 93668 typically vote, below the U.S. average of about 62%. Among adults in 93668, ~27% vote Democratic, ~22% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How 93668 compares
Among zip codes within 15 miles, 93668 leans more Democratic than 3 of 5 neighbors.
93668 runs about 10 points more Republican than California as a whole.
Politics vary noticeably by block within 93668. The east side runs the most Democratic (D+16) and the southeast side runs the most Republican (R+13), a spread of about 29 points.
Why 93668 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 93668. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 93668, CA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 93668 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 93668 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 37%, about 25 points below the California average of 62%. Renters vote less often than owners, and about 34% of households in 93668 rent, compared to around 56% in nearby zip codes. High food insecurity lines up with lower turnout, and about 47% of adults in 93668 report food insecurity, in the top fraction 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.