Marshall County leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 68% of adults in Marshall County typically vote, above the U.S. average of about 62%. Among adults in Marshall County, ~17% vote Democratic, ~51% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How Marshall County compares
Among counties within 50 miles, Marshall County leans more Republican than 10 of 18 neighbors.
Marshall County runs about 8 points more Republican than West Virginia as a whole.
Politics vary noticeably by city within Marshall County. The south side is the most Republican-leaning (R+64) and the west side is the least Republican-leaning (R+37), a spread of about 27 points.
Why Marshall County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Marshall County. The lean here lands roughly where demographic data alone would predict.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Marshall County, WV sits above the national average on this measure.
Why turnout in Marshall County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Marshall 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 57%, below 64% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Ohio County, WV R+20
- Belmont County, OH R+45
- Wetzel County, WV R+57
- Monroe County, OH R+63
- Brooke County, WV R+42
- Jefferson County, OH R+35
- Tyler County, WV R+61
- Greene County, PA R+43
- Harrison County, OH R+56
- Washington County, PA R+24
Counties with Similar Populations
- Boyle County, KY R+29
- Hardin County, OH R+50
- Vernon County, WI R+19
- Trempealeau County, WI R+26
- Obion County, TN R+52
- Greene County, IN R+55
- McCurtain County, OK R+55
- Giles County, TN R+57
- Powhatan County, VA R+38
- Clare County, MI R+40
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Sources and methodology
Precinct-level voting records used to fit the model come from West Virginia 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.