Shelby is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 82% of adults in Shelby typically vote, above the U.S. average of about 62%. Among adults in Shelby, ~20% vote Democratic, ~62% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Shelby compares
Among cities within 25 miles, Shelby leans more Republican than 52 of 73 neighbors.
Shelby runs about 33 points more Republican than Indiana as a whole.
Why Shelby leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Shelby, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Shelby drive to work alone, about 15 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and Shelby sits in the bottom quarter (about 15%, below 76% of cities).
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as Shelby, IN does.
Why turnout in Shelby looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Shelby 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 62%, modestly above similar-sized cities (around 50%). Homeowners vote more often than renters, and about 91% of households in Shelby own their home, about 16 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Thayer, IN R+57
- Roselawn, IN R+48
- Sumava Resorts, IN R+55
- Schneider, IN R+58
- DeMotte, IN R+47
- Southeast Grove, IN R+49
- Lowell, IN R+39
- Lake Village, IN R+58
- Lake Dalecarlia, IN R+42
Cities with Similar Populations
- Ellisville, IL R+51
- Nymph, AL D+10
- Dolliver, IA R+53
- Martha, KY R+74
- Shell, WY R+76
- Jenson, AR R+67
- Altair, TX R+63
- Doloroso, MS R+9
- Petroleum, WV R+70
- Woodville, NY R+46
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.