Naco leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 51% of adults in Naco typically vote, below the U.S. average of about 62%. Among adults in Naco, ~28% vote Democratic, ~23% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How Naco compares
Among cities within 25 miles, Naco leans more Democratic than 11 of 14 neighbors.
Naco runs about 15 points more Democratic than Arizona as a whole. Arizona leans Republican overall, while Naco is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Naco. The northeast side runs the most Democratic (D+12) and the northwest side runs the most Republican (R+11), a spread of about 23 points.
Why Naco leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Naco, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 32% of adults in Naco have never been married, modestly above similar-sized cities (around 23%). Naco runs against the grain of Arizona, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Naco, AZ sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Naco looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Naco is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 23% of adults in Naco report food insecurity, above 87% of cities. Low high-school completion lines up with lower turnout, and about 86% of adults in Naco have completed high school, below 76% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Don Luis, AZ D+6
- Bisbee, AZ D+4
- Palominas, AZ R+37
- Hereford, AZ R+39
- Paul Spur, AZ R+24
- Miracle Valley, AZ R+40
- Sierra Vista Southeast, AZ R+36
- Nicksville, AZ R+36
- McNeal, AZ R+43
Cities with Similar Populations
- Bevelle, AL R+40
- Hamilton, KY R+57
- Lake Junaluska, NC R+18
- Lindsey, WI R+38
- Wisemantown, KY R+64
- Spring Bay, IL R+42
- White Sulphur Springs, NY R+29
- Green Spring, KY D+4
- Elliottstown, IL R+75
- Tallula, IL R+54
All Local Stats
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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.