Danville leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 78% of adults in Danville typically vote, above the U.S. average of about 62%. Among adults in Danville, ~50% vote Democratic, ~28% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Danville compares
Among cities within 25 miles, Danville leans more Democratic than 15 of 59 neighbors.
Danville runs about 7 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Danville. The south side is the most Democratic-leaning (D+35) and the northeast side is the least Democratic-leaning (D+9), a spread of about 26 points.
Why Danville 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 Danville, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 73% of adults in Danville hold a bachelor's degree, about 44 points above the U.S. average of 28%. Dense areas vote Democratic, and Danville sits in the top fifth on density (about 68%, above 91% of cities).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Danville, CA sits in the top tenth 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 Danville looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Danville 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Danville have completed high school, above 95% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Diablo, CA D+15
- San Ramon, CA D+34
- Alamo, CA D+20
- Dublin, CA D+35
- Castle Hill, CA D+41
- Walnut Creek, CA D+47
- Clayton, CA D+14
- Castro Valley, CA D+33
- Moraga, CA D+49
- Pleasanton, CA D+32
Cities with Similar Populations
- Panama City, FL R+31
- Ormond Beach, FL R+24
- Fountain Valley, CA R+3
- Rosemead, CA D+17
- Altamonte Springs, FL D+7
- Titusville, FL R+23
- Elyria, OH D+2
- Hendersonville, NC R+14
- Chesterfield, VA D+5
- Pocatello, ID R+18
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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.