Sherman County is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 66% of adults in Sherman County typically vote, near the U.S. average of about 62%. Among adults in Sherman County, ~10% vote Democratic, ~56% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Sherman County compares
Among counties within 50 miles, Sherman County leans more Republican than 5 of 7 neighbors.
Sherman County runs about 56 points more Republican than Texas as a whole.
Politics vary noticeably by city within Sherman County. The southwest side is the most Republican-leaning (R+87) and the west side is the least Republican-leaning (R+58), a spread of about 29 points.
Why Sherman 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 Sherman County, not a ranked or complete list of what matters most.
Sherman County votes Republican even though it is densely developed (about 54%, well above the Texas average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Sherman County, TX sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Sherman County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Sherman County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 20%, about 10 points above the U.S. average of 10%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Moore County, TX R+32
- Dallam County, TX R+46
- Hartley County, TX R+76
- Cimarron County, OK R+68
- Texas County, OK R+45
- Hansford County, TX R+68
- Morton County, KS R+74
- Hutchinson County, TX R+60
- Ochiltree County, TX R+58
- Stevens County, KS R+73
Counties with Similar Populations
- Decatur County, KS R+65
- Logan County, KS R+67
- Jackson County, SD R+9
- Real County, TX R+64
- Trego County, KS R+67
- Aurora County, SD R+59
- Hall County, TX R+63
- Douglas County, SD R+68
- Perkins County, SD R+68
- Gove County, KS R+77
Sources and methodology
Precinct-level voting records used to fit the model come from Texas Secretary of State, Elections Division, 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.