Sheridan County is a Republican stronghold. About 11% of voters here vote Democratic and 89% Republican.
About 70% of adults in Sheridan County typically vote, above the U.S. average of about 62%. Among adults in Sheridan County, ~8% vote Democratic, ~62% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Sheridan County compares
Among counties within 50 miles, Sheridan County is the most Republican-leaning.
Sheridan County runs about 63 points more Republican than Kansas as a whole.
Why Sheridan 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 Sheridan County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 6% of residents in Sheridan County live in densely developed areas, about 13 points below the Kansas average of 19%.
Population density and Republican lean
Places with low population density tend to lean Republican; Sheridan County, KS sits in the bottom tenth nationally on this measure.
Why turnout in Sheridan County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sheridan 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 67%, about 7 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Sheridan County have completed high school, above 96% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Gove County, KS R+77
- Decatur County, KS R+65
- Logan County, KS R+67
- Thomas County, KS R+67
- Graham County, KS R+65
- Trego County, KS R+67
- Rawlins County, KS R+73
- Norton County, KS R+71
- Red Willow County, NE R+55
- Lane County, KS R+78
Counties with Similar Populations
- Schleicher County, TX R+44
- Kiowa County, KS R+71
- Niobrara County, WY R+90
- Potter County, SD R+62
- Graham County, KS R+65
- Ziebach County, SD D+12
- McPherson County, SD R+66
- Elk County, KS R+68
- Wayne County, UT R+64
- Harmon County, OK R+53
Sources and methodology
Precinct-level voting records used to fit the model come from Kansas 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.