Walworth County is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 68% of adults in Walworth County typically vote, above the U.S. average of about 62%. Among adults in Walworth County, ~15% vote Democratic, ~53% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How Walworth County compares
Among counties within 50 miles, Walworth County leans more Republican than 3 of 5 neighbors.
Walworth County runs about 26 points more Republican than South Dakota as a whole.
Politics vary noticeably by city within Walworth County. The southeast side is the most Republican-leaning (R+78) and the west side is the least Republican-leaning (R+37), a spread of about 42 points.
Why Walworth 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 Walworth County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 11% of residents in Walworth County live in densely developed areas, about 25 points below the U.S. average of 36%.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Walworth 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 Walworth County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Walworth 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 66%, about 6 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Campbell County, SD R+66
- Corson County, SD D+38
- Potter County, SD R+62
- Dewey County, SD D+30
- Sioux County, ND D+54
- Emmons County, ND R+70
- McPherson County, SD R+66
- Edmunds County, SD R+60
- Sully County, SD R+62
- McIntosh County, ND R+61
Counties with Similar Populations
- Stewart County, GA D+12
- Atchison County, MO R+59
- Jefferson County, OK R+68
- Luce County, MI R+32
- Johnson County, NE R+51
- Yukon-Koyukuk Census Area, AK D+17
- McHenry County, ND R+61
- Hansford County, TX R+68
- Coal County, OK R+68
- Boone County, NE R+64
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.