Tripp County is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 64% of adults in Tripp County typically vote, near the U.S. average of about 62%. Among adults in Tripp County, ~13% vote Democratic, ~51% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Tripp County compares
Among counties within 50 miles, Tripp County leans more Republican than 3 of 5 neighbors.
Tripp County runs about 29 points more Republican than South Dakota as a whole.
Why Tripp 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 Tripp County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 8% of residents in Tripp County live in densely developed areas, about 28 points below the U.S. average of 36%.
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as Tripp County, SD does.
Why turnout in Tripp County looks the way it does
Turnout in Tripp County 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 Counties
- Gregory County, SD R+65
- Keya Paha County, NE R+82
- Lyman County, SD R+5
- Brule County, SD R+52
- Todd County, SD D+57
- Mellette County, SD R+25
- Buffalo County, SD D+24
- Brown County, NE R+74
- Jones County, SD R+72
- Rock County, NE R+74
Counties with Similar Populations
- Cameron Parish, LA R+86
- Putnam County, IL R+28
- Lincoln County, MN R+49
- Dixon County, NE R+56
- Cook County, MN D+32
- Bent County, CO R+29
- Lynn County, TX R+61
- Gray County, KS R+73
- Audubon County, IA R+46
- Lincoln County, CO R+61
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.