85135 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 62% of adults in 85135 typically vote, near the U.S. average of about 62%. Among adults in 85135, ~34% vote Democratic, ~28% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How 85135 compares
85135 sits in a sparsely populated area with few comparable zip codes nearby.
85135 runs about 16 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while 85135 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 85135. The east side is the most Democratic-leaning (D+19) and the west side is the least Democratic-leaning (D+4), a spread of about 15 points.
Why 85135 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 85135, not a ranked or complete list of what matters most.
85135 votes against the grain of Arizona. Arizona leans Republican overall, while 85135 runs about 16 points more Democratic.
Food insecurity and voter turnout
Places with high food insecurity tend to turn out at a lower rate; 85135, AZ sits in the top tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in 85135 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 85135 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 44%, about 11 points below the Arizona average of 54%. High food insecurity lines up with lower turnout, and about 32% of adults in 85135 report food insecurity, above 95% 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.