Grand Isle County is a true toss-up. About 50% of voters here vote Democratic and 50% Republican. These figures are model estimates: Vermont did not have precinct-level voting records available for training, so the numbers above come from demographic and health features rather than local ground truth.
About 85% of adults in Grand Isle County typically vote, above the U.S. average of about 62%. Among adults in Grand Isle County, ~42% vote Democratic, ~43% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How Grand Isle County compares
Among counties within 50 miles, Grand Isle County sits roughly in the middle of the political spectrum, with 3 neighbors leaning further in the place's direction and 2 leaning the other way.
Grand Isle County runs about 32 points more Republican than Vermont as a whole.
Politics vary noticeably by city within Grand Isle County. The southwest side runs the most Democratic (D+21) and the north side runs the most Republican (R+20), a spread of about 41 points.
Why Grand Isle County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Grand Isle County. None of them point strongly toward either party.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Grand Isle County, VT sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Grand Isle County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Grand Isle County 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 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Grand Isle County own their home, in the top fraction of counties. High high-school completion lines up with higher turnout, and about 96% of adults in Grand Isle County have completed high school, above 95% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Clinton County, NY R+5
- Franklin County, VT R+23
- Chittenden County, VT D+35
- Lamoille County, VT D+7
- Essex County, NY R+5
- Addison County, VT D+23
- Washington County, VT D+19
- Franklin County, NY R+11
- Orleans County, VT R+17
- Caledonia County, VT R+9
Counties with Similar Populations
- Pierce County, NE R+72
- Pepin County, WI R+30
- Lexington City, VA D+10
- Jefferson County, MS D+63
- Jefferson County, NE R+51
- Rappahannock County, VA R+17
- Grant County, KS R+59
- Grant County, OR R+53
- Elliott County, KY R+57
- Newton County, AR R+63
Sources and methodology
Precinct-level voting records used to fit the model come from Vermont Secretary of State, Elections Division, 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. VT did not have precinct-level voting records available for training, so the figures here come from extrapolation across demographic, health, and land-use features rather than local ground truth. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.