70128 is a Democratic stronghold. About 91% of voters here vote Democratic and 9% Republican.
About 53% of adults in 70128 typically vote, below the U.S. average of about 62%. Among adults in 70128, ~48% vote Democratic, ~5% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 70128 compares
Among zip codes within 15 miles, 70128 leans more Democratic than 28 of 29 neighbors.
70128 runs about 104 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while 70128 is one of the few Democratic-leaning pockets.
Why 70128 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 70128, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 70128 is about 3%, about 69 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 51% of adults in 70128 have never been married, above 95% of zip codes. 70128 runs against the grain of Louisiana, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 70128, LA sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 70128 looks the way it does
Areas with high food insecurity turn out at lower rates. About 35% of adults in 70128 report food insecurity, about 19 points above the U.S. average of 16%. Strong routine healthcare access lines up with higher turnout, and 70128 sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.