Jerauld County leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 83% of adults in Jerauld County typically vote, above the U.S. average of about 62%. Among adults in Jerauld County, ~22% vote Democratic, ~61% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Jerauld County compares
Among counties within 50 miles, Jerauld County leans more Republican than 3 of 10 neighbors.
Jerauld County runs about 19 points more Republican than South Dakota as a whole.
Why Jerauld County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Jerauld County. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Jerauld County, SD sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Jerauld County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Jerauld 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%. Homeowners vote more often than renters, and about 84% of households in Jerauld County own their home, above 93% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Sanborn County, SD R+59
- Beadle County, SD R+46
- Aurora County, SD R+59
- Davison County, SD R+43
- Hand County, SD R+62
- Brule County, SD R+52
- Buffalo County, SD D+24
- Hanson County, SD R+72
- Miner County, SD R+52
- Douglas County, SD R+68
Counties with Similar Populations
- Daniels County, MT R+66
- Dundy County, NE R+67
- Comanche County, KS R+73
- Powder River County, MT R+72
- De Baca County, NM R+35
- Denali Borough, AK R+37
- Hodgeman County, KS R+77
- McCone County, MT R+72
- Golden Valley County, ND R+69
- Cheyenne County, CO R+72
All Local Stats
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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.