State Line, IN Political Map | Democrat & Republican Areas in State Line

State Line leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.

 
State Line, IN block-group political-lean map
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About 83% of adults in State Line typically vote, above the U.S. average of about 62%. Among adults in State Line, ~22% vote Democratic, ~61% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.

State Line, IN block-group voter-turnout map
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How State Line compares

Among cities within 25 miles, State Line leans more Republican than 17 of 86 neighbors.

State Line runs about 27 points more Republican than Indiana as a whole.

Why State Line 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 State Line, not a ranked or complete list of what matters most.

Areas with many family households vote Republican. About 77% of households in State Line are family households, about 11 points above the U.S. average of 67%.

Homeownership and voter turnout

Places with homeowner-heavy households tend to turn out at a higher rate; State Line, IN sits in the top tenth nationally on this measure.

Why turnout in State Line looks the way it does

Homeowners vote more often than renters. About 93% of households in State Line own their home, about 12 points above the Indiana average of 82%. High high-school completion lines up with higher turnout, and more than 99% of adults in State Line have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.

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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.