70040 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 59% of adults in 70040 typically vote, near the U.S. average of about 62%. Among adults in 70040, ~35% vote Democratic, ~24% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How 70040 compares
Among zip codes within 15 miles, 70040 leans more Democratic than 8 of 15 neighbors.
70040 runs about 42 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while 70040 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 70040. The south side runs the most Democratic (D+72) and the northeast side runs the most Republican (R+48), a spread of about 120 points.
Why 70040 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 70040, not a ranked or complete list of what matters most.
70040 votes against the grain of Louisiana. Louisiana leans Republican overall, while 70040 runs about 42 points more Democratic.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 70040, LA sits in the bottom tenth 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 70040 looks the way it does
Areas with high food insecurity turn out at lower rates. About 35% of adults in 70040 report food insecurity, about 19 points above the U.S. average of 16%. Limited routine healthcare access lines up with lower turnout, and 70040 sits in the bottom quarter on routine-care measures. Low high-school completion lines up with lower turnout, and about 87% of adults in 70040 have completed high school, below 76% of zip codes. 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.