Terrace-Shurtleff leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 58% of adults in Terrace-Shurtleff typically vote, near the U.S. average of about 62%. Among adults in Terrace-Shurtleff, ~39% vote Democratic, ~19% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How Terrace-Shurtleff compares
Among neighborhoods within 5 miles, Terrace-Shurtleff leans more Democratic than 4 of 6 neighbors.
Terrace-Shurtleff runs about 16 points more Democratic than California as a whole.
Why Terrace-Shurtleff leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Terrace-Shurtleff. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Terrace-Shurtleff, Napa, CA sits in the top quarter nationally on this measure.
Why turnout in Terrace-Shurtleff looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in Terrace-Shurtleff have more than one occupant per room, above 83% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Central Napa, Napa, CA D+39
- Westwood-San Francisco, Napa, CA D+35
- Beard, Napa, CA D+37
- Vintage, Napa, CA D+28
- Browns Valley, Napa, CA D+30
- Linda Vista-San Francisco, Napa, CA D+24
- Flosden, Vallejo, CA D+26
- Chabot Terrace, Vallejo, CA D+48
- Harry Floyd Terrace, Vallejo, CA D+42
- Carquinez Heights, Vallejo, CA D+45
Neighborhoods with Similar Populations
- Downtown Rialto, Rialto, CA D+28
- Middletown-Pelham Bay, Bronx, NY D+12
- Central Business District-Buffalo, Buffalo, NY D+61
- Hamlin Park, Chicago, IL D+63
- Benton Park, St. Louis, MO D+74
- Port Dixie, Lake Lorraine, FL R+23
- Scioto Woods, Columbus, OH D+19
- East Isles, Minneapolis, MN D+81
- East Augusta, Augusta, GA D+80
- Brookview, Waco, TX D+6
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.