Isleboro leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 83% of adults in Isleboro typically vote, above the U.S. average of about 62%. Among adults in Isleboro, ~27% vote Democratic, ~56% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Isleboro compares
Among cities within 25 miles, Isleboro leans more Republican than 15 of 25 neighbors.
Isleboro runs about 22 points more Republican than Florida as a whole.
Why Isleboro 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 Isleboro, not a ranked or complete list of what matters most.
Isleboro votes Republican even though it is densely developed (about 31%, well below the Florida average of 57%). Here an older population outweighs the Democratic lean that density usually predicts.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Isleboro, FL 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 Isleboro looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Isleboro 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 52%, about 8 points below the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- New Smyrna Beach, FL R+29
- Ponce Inlet, FL R+27
- Port Orange, FL R+26
- Daytona Beach Shores, FL R+18
- South Daytona, FL R+12
- Edgewater, FL R+33
- Daytona Beach, FL R+19
- Holly Hill, FL Even
- Oak Hill, FL R+51
Cities with Similar Populations
- Alexander, ND R+82
- Georgetown, ID R+74
- Rocky Ripple, IN D+29
- Mount Etna, PA R+62
- Forman, ND R+46
- Nibbyville, IN R+54
- Greendale, MO D+78
- New Bavaria, OH R+64
- Hansonville, VA R+70
- Bedford Park, IL R+10
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.