85718 leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 85% of adults in 85718 typically vote, above the U.S. average of about 62%. Among adults in 85718, ~53% vote Democratic, ~32% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 85718 compares
Among zip codes within 15 miles, 85718 leans more Democratic than 18 of 32 neighbors.
85718 runs about 30 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while 85718 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 85718. The southwest side is the most Democratic-leaning (D+34) and the southeast side is the least Democratic-leaning (D+19), a spread of about 15 points.
Why 85718 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 85718, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 73% of adults in 85718 hold a bachelor's degree, about 45 points above the U.S. average of 28%. Dense areas vote Democratic, and 85718 sits in the top fifth on density (about 91%, above 88% of zip codes). 85718 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; 85718, AZ sits in the top quarter 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 85718 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 85718 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 85718 have completed high school, above 94% 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.