Marshall County leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 70% of adults in Marshall County typically vote, above the U.S. average of about 62%. Among adults in Marshall County, ~20% vote Democratic, ~51% Republican, and ~29% 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 8 of 18 neighbors.
Marshall County runs about 25 points more Republican than Indiana as a whole.
Politics vary noticeably by city within Marshall County. The southeast side is the most Republican-leaning (R+59) and the southwest side is the least Republican-leaning (R+40), a spread of about 18 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.
Local retail density and voter turnout
Places with dense local retail within a mile tend to turn out at a higher rate; Marshall County, IN sits above the national average on this measure. Nearby retail does not change how people vote; it reflects how urban and built-up a place is.
Why turnout in Marshall County looks the way it does
Turnout in Marshall County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Starke County, IN R+49
- Fulton County, IN R+51
- St. Joseph County, IN D+9
- Kosciusko County, IN R+47
- Elkhart County, IN R+28
- Pulaski County, IN R+54
- LaPorte County, IN R+11
- Cass County, MI R+29
- Cass County, IN R+38
- Wabash County, IN R+48
Counties with Similar Populations
- Bryan County, OK R+54
- Hancock County, MS R+53
- Mifflin County, PA R+58
- Logan County, OH R+51
- Habersham County, GA R+55
- Beltrami County, MN R+4
- Monroe County, TN R+67
- Monroe County, WI R+28
- Windham County, VT D+28
- Colquitt County, GA R+36
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana 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.