Treasure Island leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 80% of adults in Treasure Island typically vote, above the U.S. average of about 62%. Among adults in Treasure Island, ~33% vote Democratic, ~47% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Treasure Island compares
Among cities within 25 miles, Treasure Island leans more Republican than 31 of 50 neighbors.
Treasure Island runs about 6 points more Republican than Florida as a whole.
Politics vary noticeably by neighborhood within Treasure Island. The north side is the most Republican-leaning (R+26) and the west side is the least Republican-leaning (R+10), a spread of about 17 points.
Why Treasure Island 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 Treasure Island, not a ranked or complete list of what matters most.
Treasure Island votes Republican even though it is densely developed (about 48%, modestly 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; Treasure Island, FL sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Treasure Island looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Treasure Island 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%. High high-school completion lines up with higher turnout, and about 97% of adults in Treasure Island have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- South Pasadena, FL R+6
- Madeira Beach, FL R+20
- St. Pete Beach, FL R+14
- Bay Pines, FL R+14
- Gulfport, FL D+7
- West Lealman, FL R+9
- Redington Beach, FL R+26
- Kenneth City, FL R+16
- North Redington Beach, FL R+24
- Redington Shores, FL R+21
Cities with Similar Populations
- South Hill, VA D+3
- Point Pleasant, WV R+50
- Coquille, OR R+17
- Belford, NJ R+26
- Mifflintown, PA R+56
- Sparta, GA D+36
- Chatham, VA R+34
- Smiths Station, AL R+40
- Catawba, NC R+54
- Blackwell, OK R+49
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.