Spring Valley leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 54% of adults in Spring Valley typically vote, below the U.S. average of about 62%. Among adults in Spring Valley, ~16% vote Democratic, ~38% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How Spring Valley compares
Among cities within 25 miles, Spring Valley leans more Republican than 8 of 19 neighbors.
Spring Valley runs about 34 points more Republican than Arizona as a whole.
Why Spring Valley 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 Spring Valley, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 9% of adults in Spring Valley hold a bachelor's degree, about 16 points below the Arizona average of 25%. Rural areas vote Republican, and Spring Valley sits in the bottom quarter on density (about 2%, below 95% of cities).
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Spring Valley, AZ sits in the bottom tenth 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 Spring Valley looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Spring Valley 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 47%, about 7 points below the Arizona average of 54%. High food insecurity lines up with lower turnout, and about 23% of adults in Spring Valley report food insecurity, above 88% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mayer, AZ R+43
- Cordes Lakes, AZ R+43
- Cordes Junction, AZ R+48
- Cleator, AZ R+50
- Poland Junction, AZ R+45
- Horse Thief, AZ R+56
- Dewey-Humboldt, AZ R+47
- Humboldt, AZ R+48
- Dewey, AZ R+33
- Crown King, AZ R+53
Cities with Similar Populations
- Chestnut Grove, TN R+72
- Vermilion, NY R+36
- Transylvania, LA R+35
- Browntown, VA R+37
- West Rupert, VT Even
- Fleming-Neon, KY R+67
- Williston, MD R+42
- Warm Springs, MT R+42
- Plainview, OR R+45
- Clayton, TX R+79
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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.