Marana leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 80% of adults in Marana typically vote, above the U.S. average of about 62%. Among adults in Marana, ~36% vote Democratic, ~44% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Marana compares
Among cities within 25 miles, Marana leans more Republican than 13 of 19 neighbors.
Politically, Marana sits close to the rest of Arizona.
Politics vary noticeably by neighborhood within Marana. The southwest side is the most split-leaning (R+38) and the southeast side is the least split-leaning (Even), a spread of about 37 points.
Why Marana 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 Marana, not a ranked or complete list of what matters most.
Marana votes Republican even though it is densely developed (about 50%, modestly above the Arizona average of 39%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Marana, AZ sits above the national average 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 Marana looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in Marana 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 Cities
- Picture Rocks, AZ R+36
- Casas Adobes, AZ D+9
- Oro Valley, AZ D+3
- Flowing Wells, AZ D+11
- Avra Valley, AZ R+28
- Catalina, AZ R+19
- Tucson Estates, AZ Even
- Catalina Foothills, AZ D+20
- Red Rock, AZ R+43
- Saddlebrooke, AZ R+8
Cities with Similar Populations
- Oak Lawn, IL D+2
- La Jolla, CA D+39
- Royal Oak, MI D+32
- Colton, CA D+17
- Carson City, NV R+11
- Perth Amboy, NJ D+11
- Placentia, CA D+4
- La Crosse, WI D+20
- Encino, CA D+21
- National City, CA D+24
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.