85035 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 32% of adults in 85035 typically vote, below the U.S. average of about 62%. Among adults in 85035, ~22% vote Democratic, ~10% Republican, and ~68% don't vote. The map below shows estimated turnout by block group.
How 85035 compares
Among zip codes within 15 miles, 85035 leans more Democratic than 52 of 58 neighbors.
85035 runs about 42 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while 85035 is one of the few Democratic-leaning pockets.
Why 85035 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 85035, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 99% of residents in 85035 live in densely developed areas, about 62 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 49% of adults in 85035 have never been married, above 95% of zip codes. 85035 runs against the grain of Arizona, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 85035, AZ 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 85035 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 85035 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 41%, about 13 points below the Arizona average of 54%. Renters vote less often than owners, and about 48% of households in 85035 rent, about 23 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 36% of adults in 85035 report food insecurity, above 97% 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 Arizona 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.