85234 leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 77% of adults in 85234 typically vote, above the U.S. average of about 62%. Among adults in 85234, ~34% vote Democratic, ~43% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How 85234 compares
Among zip codes within 15 miles, 85234 leans more Republican than 23 of 37 neighbors.
85234 runs about 7 points more Republican than Arizona as a whole.
Politics vary noticeably by block within 85234. The south side is the most Republican-leaning (R+22) and the southwest side is the least Republican-leaning (R+3), a spread of about 19 points.
Why 85234 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 85234, not a ranked or complete list of what matters most.
85234 votes Republican even though it is densely developed (about 98%, far above the Arizona average of 39%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 74% of households in 85234 are family households, above 77% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 85234, AZ sits in the top quarter nationally on this measure.
Why turnout in 85234 looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in 85234 have completed high school, about 9 points above the Arizona average of 87%. 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.