85623 leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 62% of adults in 85623 typically vote, near the U.S. average of about 62%. Among adults in 85623, ~23% vote Democratic, ~39% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How 85623 compares
Among zip codes within 15 miles, 85623 leans more Republican than 4 of 5 neighbors.
85623 runs about 20 points more Republican than Arizona as a whole.
Politics vary noticeably by block within 85623. The southwest side is the most Republican-leaning (R+43) and the northeast side is the least Republican-leaning (R+9), a spread of about 34 points.
Why 85623 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 85623. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 85623, AZ sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 85623 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 85623 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. 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.