St. James Parish is a true toss-up. About 52% of voters here vote Democratic and 48% Republican.
About 81% of adults in St. James Parish typically vote, above the U.S. average of about 62%. Among adults in St. James Parish, ~42% vote Democratic, ~39% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How St. James Parish compares
Among counties within 50 miles, St. James Parish leans more Democratic than 11 of 15 neighbors.
St. James Parish runs about 25 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while St. James Parish is one of the few Democratic-leaning pockets.
Politics vary noticeably by city within St. James Parish. The west side runs the most Democratic (D+71) and the north side runs the most Republican (R+45), a spread of about 116 points.
Why St. James Parish leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for St. James Parish, not a ranked or complete list of what matters most.
St. James Parish votes against the grain of Louisiana. Louisiana leans Republican overall, while St. James Parish runs about 25 points more Democratic.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; St. James 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 St. James Parish looks the way it does
Areas with strong routine healthcare access turn out at higher rates. St. James 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 58%, below 60% of counties. Homeowners vote more often than renters, and about 84% of households in St. James Parish own their home, above 93% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- St. John the Baptist Parish, LA D+27
- Ascension Parish, LA R+32
- Assumption Parish, LA R+30
- St. Charles Parish, LA R+25
- Lafourche Parish, LA R+55
- Terrebonne Parish, LA R+42
- Livingston Parish, LA R+66
- Iberville Parish, LA R+6
- Jefferson Parish, LA D+4
- East Baton Rouge Parish, LA D+23
Counties with Similar Populations
- Labette County, KS R+42
- Willacy County, TX R+7
- Bourbon County, KY R+37
- Crisp County, GA R+7
- Yell County, AR R+59
- Lincoln County, NM R+28
- Calhoun County, TX R+37
- Morgan County, GA R+45
- DeKalb County, TN R+63
- Carroll County, IN R+53
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.