95988 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 51% of adults in 95988 typically vote, below the U.S. average of about 62%. Among adults in 95988, ~17% vote Democratic, ~34% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How 95988 compares
Among zip codes within 15 miles, 95988 is the least Republican-leaning.
95988 runs about 54 points more Republican than California as a whole. California leans Democratic overall, while 95988 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 95988. The southeast side is the most Republican-leaning (R+66) and the northwest side is the least Republican-leaning (R+28), a spread of about 37 points.
Why 95988 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 95988, not a ranked or complete list of what matters most.
95988 votes against the grain of California. California leans Democratic overall, while 95988 runs about 54 points more Republican. Dense places usually vote Democratic, but 95988 runs against that pattern. Low college attainment predicts Republican voting, and 95988 sits in the bottom quarter (about 15%, below 82% of zip codes).
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 95988, CA sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 95988 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 95988 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 37% of households in 95988 rent, above 84% of zip codes. High food insecurity lines up with lower turnout, and about 20% of adults in 95988 report food insecurity, above 80% 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.