Belle Chasse leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 77% of adults in Belle Chasse typically vote, above the U.S. average of about 62%. Among adults in Belle Chasse, ~22% vote Democratic, ~55% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Belle Chasse compares
Among cities within 25 miles, Belle Chasse leans more Republican than 40 of 48 neighbors.
Belle Chasse runs about 20 points more Republican than Louisiana as a whole.
Politics vary noticeably by neighborhood within Belle Chasse. The northwest side is the most Republican-leaning (R+55) and the west side is the least Republican-leaning (R+27), a spread of about 28 points.
Why Belle Chasse 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 Belle Chasse, not a ranked or complete list of what matters most.
Belle Chasse votes Republican even though it is densely developed (about 54%, well above the Louisiana average of 25%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 78% of households in Belle Chasse are family households, above 85% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Belle Chasse, LA sits in the top quarter nationally on this measure.
Why turnout in Belle Chasse looks the way it does
Turnout in Belle Chasse 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 Cities
- St. Rosalie, LA R+44
- Dalcour, LA R+10
- Timberlane, LA D+16
- Harvey, LA D+32
- Woodmere, LA D+75
- Bertrandville, LA R+10
- Terrytown, LA D+27
- Gretna, LA D+20
Cities with Similar Populations
- Alamo, CA D+20
- Moore, SC R+21
- Dexter, MI D+19
- Tiverton, RI Even
- Hillsboro, MO R+52
- Beech Grove, IN R+7
- Parlier, CA D+14
- Pittston, PA R+13
- Coolidge, AZ R+12
- Trenton, OH R+52
Sources and methodology
Precinct-level voting records used to fit the model come from Louisiana 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.