Spink County is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 68% of adults in Spink County typically vote, above the U.S. average of about 62%. Among adults in Spink County, ~17% vote Democratic, ~51% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How Spink County compares
Among counties within 50 miles, Spink County leans more Republican than 2 of 5 neighbors.
Spink County runs about 21 points more Republican than South Dakota as a whole.
Politics vary noticeably by city within Spink County. The northwest side is the most Republican-leaning (R+57) and the west side is the least Republican-leaning (R+44), a spread of about 14 points.
Why Spink County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Spink County, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Spink County sits in the bottom quarter on density and about 92% of residents are non-Hispanic white, about 12 points above the South Dakota average of 81%.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Spink County, SD sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Spink County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Spink County 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%. High high-school completion lines up with higher turnout, and about 94% of adults in Spink County have completed high school, above 80% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Clark County, SD R+57
- Faulk County, SD R+66
- Beadle County, SD R+46
- Hand County, SD R+62
- Brown County, SD R+35
- Edmunds County, SD R+60
- Day County, SD R+42
- Jerauld County, SD R+48
- Hyde County, SD R+60
- Kingsbury County, SD R+50
Counties with Similar Populations
- Saguache County, CO D+5
- Bear Lake County, ID R+71
- Ellsworth County, KS R+56
- Bottineau County, ND R+50
- Moody County, SD R+40
- Henderson County, IL R+41
- Treutlen County, GA R+35
- Lafayette County, AR R+32
- Randolph County, GA D+3
- Antelope County, NE R+71
All Local Stats
Home Services
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.