St. Joseph leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 67% of adults in St. Joseph typically vote, near the U.S. average of about 62%. Among adults in St. Joseph, ~39% vote Democratic, ~28% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How St. Joseph compares
Among cities within 25 miles, St. Joseph leans more Democratic than 21 of 36 neighbors.
St. Joseph runs about 39 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while St. Joseph is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within St. Joseph. The east side runs the most Democratic (D+46) and the northeast side runs the most Republican (R+39), a spread of about 85 points.
Why St. Joseph 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 St. Joseph, not a ranked or complete list of what matters most.
Rural, majority-Black areas of the Southern Black Belt vote Democratic, against the usual rural pattern. About 61% of residents in St. Joseph are Black or African American, about 35 points above the Louisiana average of 25%. A high never-married share predicts Democratic voting, and about 33% of adults in St. Joseph have never been married, above 82% of cities. St. Joseph runs against the grain of Louisiana, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; St. Joseph, LA sits in the bottom quarter nationally on this measure.
Why turnout in St. Joseph looks the way it does
Turnout in St. Joseph 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
- Wilsonia, LA R+25
- Rodney, MS D+60
- Locust Ridge, LA R+37
- Newellton, LA R+42
- Lorman, MS D+74
- Saranac, LA R+50
- Mayflower, LA R+46
- Russum, MS D+61
Cities with Similar Populations
- Alma, KS R+47
- Van Buren, MO R+66
- Stratford, CA Even
- Drakes Branch, VA R+28
- Poplar, WI R+21
- Great Cacapon, WV R+59
- Bonanza, TX R+71
- Porter, ME R+34
- Dexter, KY R+60
- Temple, NH Even
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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.