Shenandoah leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 71% of adults in Shenandoah typically vote, above the U.S. average of about 62%. Among adults in Shenandoah, ~33% vote Democratic, ~38% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Shenandoah compares
Among cities within 25 miles, Shenandoah leans more Republican than 20 of 56 neighbors.
Shenandoah runs about 16 points more Democratic than Louisiana as a whole.
Politics vary noticeably by neighborhood within Shenandoah. The northwest side runs the most Democratic (D+26) and the east side runs the most Republican (R+34), a spread of about 60 points.
Why Shenandoah 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 Shenandoah, not a ranked or complete list of what matters most.
Shenandoah votes Republican even though it is densely developed (about 89%, far above the Louisiana average of 25%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Shenandoah, 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 Shenandoah looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Shenandoah 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 67%, about 7 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Baton Rouge, LA R+6
- Prairieville, LA R+47
- Denham Springs, LA R+59
- Merrydale, LA D+85
- Port Vincent, LA R+53
- Greenwell Springs, LA R+56
- St. Gabriel, LA Even
- Central, LA R+47
- Geismar, LA R+25
- Sunshine, LA D+14
Cities with Similar Populations
- Spanish Fork, UT R+48
- Lancaster, TX D+61
- Pahrump, NV R+39
- Meadow Woods, FL D+12
- Gonzales, LA R+24
- Williamsport, PA R+10
- Burlington, VT D+65
- Eagle Mountain, UT R+48
- Bullhead City, AZ R+30
- Morrisville, NC D+37
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.