Leona Valley, CA Political Map | Democrat & Republican Areas in Leona Valley

By the BestNeighborhood data science team. Last updated May 2026.

Leona Valley leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.

 

About 75% of adults in Leona Valley typically vote, above the U.S. average of about 62%. Among adults in Leona Valley, ~23% vote Democratic, ~52% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.

How Leona Valley compares

Among cities within 25 miles, Leona Valley leans more Republican than 22 of 23 neighbors.

Leona Valley runs about 60 points more Republican than California as a whole. California leans Democratic overall, while Leona Valley is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Leona Valley. The northwest side is the most Republican-leaning (R+41) and the south side is the least Republican-leaning (R+17), a spread of about 24 points.

Why Leona Valley leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Leona Valley, not a ranked or complete list of what matters most.

Leona Valley votes against the grain of California. California leans Democratic overall, while Leona Valley runs about 60 points more Republican.

High-school completion, uninsured rate, and voter turnout

Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Leona Valley, CA does.

Why turnout in Leona Valley looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Leona Valley 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%. Homeowners vote more often than renters, and about 94% of households in Leona Valley own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in Leona Valley have completed high school, above 88% of cities. Learn more about the findings and methodology on the political spectrum map.

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.