Cudjoe Key leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 84% of adults in Cudjoe Key typically vote, above the U.S. average of about 62%. Among adults in Cudjoe Key, ~28% vote Democratic, ~56% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Cudjoe Key compares
Among cities within 25 miles, Cudjoe Key leans more Republican than 4 of 5 neighbors.
Cudjoe Key runs about 20 points more Republican than Florida as a whole.
Why Cudjoe Key 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 Cudjoe Key, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in Cudjoe Key live in densely developed areas, about 55 points below the Florida average of 57%.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; Cudjoe Key, FL sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Cudjoe Key looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cudjoe Key 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 64%, above 66% of cities. High high-school completion lines up with higher turnout, and about 99% of adults in Cudjoe Key have completed high school, above 97% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Summerland Key, FL R+27
- Sugarloaf Shores, FL R+30
- Big Pine Key, FL R+29
- Key West, FL D+3
- Marathon, FL R+24
- Key Colony Beach, FL R+35
- Long Key, FL R+32
- Layton, FL R+32
Cities with Similar Populations
- Garland, AL R+48
- Moody, NY R+19
- Kim, CO R+58
- Kennebec, ME R+31
- Turnbull, MS D+22
- Greenwater, WA R+33
- Ovid, ID R+74
- Peoli, OH R+63
- Duck Creek, TN R+77
- Liske, MI R+46
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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.