Seminole County, FL Political Map | Democrat & Republican Areas in Seminole County

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

Seminole County is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.

 

About 71% of adults in Seminole County typically vote, above the U.S. average of about 62%. Among adults in Seminole County, ~34% vote Democratic, ~37% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.

How Seminole County compares

Among counties within 50 miles, Seminole County leans more Republican than 2 of 6 neighbors.

Seminole County runs about 8 points more Democratic than Florida as a whole.

Politics vary noticeably by city within Seminole County. The north side runs the most Democratic (D+13) and the east side runs the most Republican (R+19), a spread of about 31 points.

Why Seminole County leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Seminole County. The lean here lands roughly where demographic data alone would predict.

Cancer-screening access and voter turnout

Places with high colon-cancer-screening access tend to turn out at a higher rate; Seminole County, FL sits above the national average on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Seminole County looks the way it does

Areas with high high-school completion turn out at higher rates. About 94% of adults in Seminole County have completed high school, above 85% of counties. 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.