Seminole County is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 57% of adults in Seminole County typically vote, near the U.S. average of about 62%. Among adults in Seminole County, ~14% vote Democratic, ~43% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How Seminole County compares
Among counties within 50 miles, Seminole County leans more Republican than 4 of 9 neighbors.
Politically, Seminole County sits close to the rest of Oklahoma.
Politics vary noticeably by city within Seminole County. The northeast side is the most Republican-leaning (R+65) and the east side is the least Republican-leaning (R+33), a spread of about 33 points.
Why Seminole 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 Seminole County, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 16% of adults in Seminole County hold a bachelor's degree, about 5 points below the Oklahoma average of 21%.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Seminole County, OK sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Seminole County looks the way it does
Areas with high food insecurity turn out at lower rates. About 26% of adults in Seminole County report food insecurity, about 10 points above the U.S. average of 16%. Limited routine healthcare access lines up with lower turnout, and Seminole County sits in the bottom quarter on routine-care measures. Low high-school completion lines up with lower turnout, and about 86% of adults in Seminole County have completed high school, below 73% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Hughes County, OK R+53
- Pottawatomie County, OK R+49
- Okfuskee County, OK R+53
- Pontotoc County, OK R+44
- Lincoln County, OK R+64
- Cleveland County, OK R+14
- Okmulgee County, OK R+40
- Coal County, OK R+68
- Garvin County, OK R+61
- McClain County, OK R+60
Counties with Similar Populations
- Mingo County, WV R+71
- Winston County, AL R+82
- Grainger County, TN R+71
- Plaquemines Parish, LA R+27
- Washington County, MO R+63
- Juniata County, PA R+62
- Menominee County, MI R+30
- Roscommon County, MI R+26
- Curry County, OR R+11
- Antrim County, MI R+21
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.