85550 leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 48% of adults in 85550 typically vote, below the U.S. average of about 62%. Among adults in 85550, ~33% vote Democratic, ~14% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How 85550 compares
85550 runs about 45 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while 85550 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 85550. The northeast side is the most Democratic-leaning (D+63) and the west side is the least Democratic-leaning (D+36), a spread of about 28 points.
Why 85550 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 85550, not a ranked or complete list of what matters most.
85550 votes against the grain of Arizona. Arizona leans Republican overall, while 85550 runs about 45 points more Democratic. A high never-married share predicts Democratic voting, and about 59% of adults in 85550 have never been married, above 98% of zip codes.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 85550, AZ sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 85550 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 85550 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 27%, about 27 points below the Arizona average of 54%. Renters vote less often than owners, and about 41% of households in 85550 rent, compared to around 24% in nearby zip codes. High food insecurity lines up with lower turnout, and about 49% of adults in 85550 report food insecurity, in the top fraction 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.