Herlong, Jacksonville, FL Political Map | Democrat & Republican Areas in Herlong

By the BestNeighborhood data science team. Last updated May 2026.

Herlong leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.

 

About 75% of adults in Herlong typically vote, above the U.S. average of about 62%. Among adults in Herlong, ~46% vote Democratic, ~29% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.

How Herlong compares

Among neighborhoods within 5 miles, Herlong leans more Democratic than 18 of 23 neighbors.

Herlong runs about 35 points more Democratic than Florida as a whole. Florida leans Republican overall, while Herlong is one of the few Democratic-leaning pockets.

Politics vary noticeably by block within Herlong. The southeast side runs the most Democratic (D+41) and the northwest side runs the most Republican (Even), a spread of about 42 points.

Why Herlong leans the way it does

This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Herlong, 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 55% of residents in Herlong are Black or African American, about 42 points above the Florida average of 13%. Herlong runs against the grain of Florida, a Democratic-leaning pocket in a Republican-leaning state.

Homeownership and voter turnout

Places with homeowner-heavy households tend to turn out at a higher rate; Herlong, Jacksonville, FL sits in the top quarter nationally on this measure.

Why turnout in Herlong looks the way it does

Homeowners vote more often than renters. About 85% of households in Herlong own their home, about 14 points above the Florida average of 71%. Limited routine healthcare access lines up with lower turnout, and Herlong sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.

Sources and methodology

Precinct-level voting records used to fit the model come from Florida Division of 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.