Tangipahoa Parish leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 66% of adults in Tangipahoa Parish typically vote, near the U.S. average of about 62%. Among adults in Tangipahoa Parish, ~22% vote Democratic, ~44% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Tangipahoa Parish compares
Among counties within 50 miles, Tangipahoa Parish leans more Republican than 12 of 17 neighbors.
Tangipahoa Parish runs about 9 points more Republican than Louisiana as a whole.
Politics vary noticeably by city within Tangipahoa Parish. The northwest side runs the most Democratic (D+18) and the northeast side runs the most Republican (R+67), a spread of about 85 points.
Why Tangipahoa Parish leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Tangipahoa Parish. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Tangipahoa Parish, LA sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Tangipahoa Parish looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Tangipahoa Parish 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 57%, below 64% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
Counties with Similar Populations
- Cache County, UT R+32
- Washington County, TN R+37
- Cambria County, PA R+35
- Harnett County, NC R+21
- Wood County, OH R+11
- Calhoun County, MI R+9
- Kendall County, IL Even
- Warren County, KY R+16
- Pickens County, SC R+43
- Tazewell County, IL R+29
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.