Ellis County is a Republican stronghold. About 12% of voters here vote Democratic and 88% Republican.
About 70% of adults in Ellis County typically vote, above the U.S. average of about 62%. Among adults in Ellis County, ~8% vote Democratic, ~62% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Ellis County compares
Among counties within 50 miles, Ellis County leans more Republican than 2 of 6 neighbors.
Ellis County runs about 28 points more Republican than Oklahoma as a whole.
Why Ellis 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 Ellis County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 8% of residents in Ellis County live in densely developed areas, about 10 points below the Oklahoma average of 18%.
Population density and Republican lean
Places with low population density tend to lean Republican; Ellis County, OK sits in the bottom tenth nationally on this measure.
Why turnout in Ellis County looks the way it does
Homeowners vote more often than renters. About 82% of households in Ellis County own their home, about 7 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Woodward County, OK R+63
- Lipscomb County, TX R+84
- Harper County, OK R+80
- Hemphill County, TX R+66
- Dewey County, OK R+78
- Roger Mills County, OK R+83
- Ochiltree County, TX R+58
- Beaver County, OK R+77
- Roberts County, TX R+90
- Beckham County, OK R+67
Counties with Similar Populations
- Knox County, MO R+66
- Pope County, IL R+60
- Lake of the Woods County, MN R+40
- Haskell County, KS R+66
- Lyman County, SD R+5
- Adams County, IA R+46
- Cavalier County, ND R+48
- Sharkey County, MS D+48
- Echols County, GA R+66
- Norton City, VA R+39
Sources and methodology
Precinct-level voting records used to fit the model come from Oklahoma State Election Board, 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.