Stamford is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 47% of adults in Stamford typically vote, below the U.S. average of about 62%. Among adults in Stamford, ~8% vote Democratic, ~39% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How Stamford compares
Among cities within 25 miles, Stamford leans more Republican than 2 of 8 neighbors.
Stamford runs about 37 points more Republican than South Dakota as a whole.
Politics vary noticeably by neighborhood within Stamford. The southwest side is the most Republican-leaning (R+73) and the east side is the least Republican-leaning (R+63), a spread of about 11 points.
Why Stamford 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 Stamford, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 86% of households in Stamford are family households, about 20 points above the U.S. average of 67%. Rural areas vote Republican, and Stamford sits in the bottom quarter on density (about 1%, below 98% of cities).
Population density and Republican lean
Places with low population density tend to lean Republican; Stamford, SD sits in the bottom tenth nationally on this measure.
Why turnout in Stamford looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Stamford is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 69%, about 9 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Capa, SD R+68
- Midland, SD R+73
- Nowlin, SD R+73
- Kirley, SD R+73
- Milesville, SD R+73
- Cherry Creek, SD D+37
Cities with Similar Populations
- Red Star, AR R+64
- Wenona, NC R+32
- Cordero, NV R+64
- Ripley, ME R+34
- Warwick, KS R+77
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Sources and methodology
Precinct-level voting records used to fit the model come from South Dakota 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.