Sunol leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 32% of adults in Sunol typically vote, below the U.S. average of about 62%. Among adults in Sunol, ~20% vote Democratic, ~12% Republican, and ~68% don't vote. The map below shows estimated turnout by block group.
How Sunol compares
Among cities within 25 miles, Sunol leans more Democratic than 7 of 57 neighbors.
Politically, Sunol sits close to the rest of California.
Politics vary noticeably by neighborhood within Sunol. The west side is the most Democratic-leaning (D+30) and the northeast side is the least Democratic-leaning (D+8), a spread of about 22 points.
Why Sunol 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 Sunol, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 64% of adults in Sunol hold a bachelor's degree, about 35 points above the U.S. average of 28%.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Sunol, CA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Sunol looks the way it does
Crowded housing lines up with lower turnout. About 4% of homes in Sunol have more than one occupant per room, above 84% of cities. Strong routine healthcare access lines up with higher turnout, and Sunol sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Pleasanton, CA D+32
- Fremont, CA D+34
- Dublin, CA D+35
- Union City, CA D+33
- Newark, CA D+35
- Fairview, CA D+42
- Hayward, CA D+38
- Livermore, CA D+21
- San Ramon, CA D+34
- Castro Valley, CA D+33
Cities with Similar Populations
- Hagerman, NM R+56
- Littlerock, WA R+8
- Greenbush, MI R+31
- Hydro, OK R+67
- Margaretville, NY Even
- Oakley, MI R+40
- Trout Run, PA R+63
- Brooklawn, NJ D+5
- Winthrop, NY R+33
- Converse, IN R+57
All Local Stats
Home Services
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.