Johnston County is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 58% of adults in Johnston County typically vote, near the U.S. average of about 62%. Among adults in Johnston County, ~10% vote Democratic, ~47% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How Johnston County compares
Among counties within 50 miles, Johnston County leans more Republican than 8 of 10 neighbors.
Johnston County runs about 16 points more Republican than Oklahoma as a whole.
Politics vary noticeably by city within Johnston County. The west side is the most Republican-leaning (R+74) and the south side is the least Republican-leaning (R+52), a spread of about 21 points.
Why Johnston County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Johnston County. The lean here lands roughly where demographic data alone would predict.
Population density and Republican lean
Places with low population density tend to lean Republican; Johnston County, OK sits in the bottom quarter nationally on this measure.
Why turnout in Johnston County looks the way it does
Areas with high food insecurity turn out at lower rates. About 23% of adults in Johnston County report food insecurity, about 7 points above the U.S. average of 16%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Marshall County, OK R+56
- Bryan County, OK R+54
- Murray County, OK R+59
- Coal County, OK R+68
- Carter County, OK R+46
- Atoka County, OK R+69
- Pontotoc County, OK R+44
- Love County, OK R+64
- Grayson County, TX R+43
- Garvin County, OK R+61
Counties with Similar Populations
- Nemaha County, KS R+64
- Roberts County, SD R+19
- Noxubee County, MS D+49
- Metcalfe County, KY R+65
- Butte County, SD R+62
- Lowndes County, AL D+35
- Clay County, TX R+74
- Montgomery County, IA R+41
- Chicot County, AR D+3
- Camden County, NC R+48
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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.