Flandreau leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 66% of adults in Flandreau typically vote, near the U.S. average of about 62%. Among adults in Flandreau, ~24% vote Democratic, ~42% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Flandreau compares
Among cities within 25 miles, Flandreau leans more Republican than 2 of 34 neighbors.
Politically, Flandreau sits close to the rest of South Dakota.
Politics vary noticeably by neighborhood within Flandreau. The east side is the most Republican-leaning (R+54) and the north side is the least Republican-leaning (R+23), a spread of about 30 points.
Why Flandreau 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 Flandreau, not a ranked or complete list of what matters most.
Flandreau votes Republican even though it is densely developed (about 21%, modestly above the South Dakota average of 9%). 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; Flandreau, SD 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 Flandreau looks the way it does
Turnout in Flandreau sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Egan, SD R+28
- Ward, SD R+39
- Lone Tree, SD R+50
- Trent, SD R+53
- Colman, SD R+53
- Ihlen, MN R+62
- Pipestone, MN R+36
- Elkton, SD R+49
- Dell Rapids, SD R+42
- Rutland, SD R+53
Cities with Similar Populations
- Santa Claus, IN R+40
- Buffalo, SC R+60
- Kinzers, PA R+53
- Manzanola, CO R+45
- Hoisington, KS R+61
- Hoxie, AR R+63
- Postville, IA R+33
- Montague, CA R+46
- Greenfield, TN R+70
- Freemansburg, PA D+16
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.