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Florida's 21st Congressional District
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Florida actually voted.
Model Florida's 21st Congressional District →
Current officeholder
Brian J. Mast Republican
2024 result
Republican R+23.6
2024 votes cast
449,401
Office
U.S. House
Who lives in this district
This district is home to about 791,702 people, median age 48.2, median household income $79,967.
Population
791,702
Median age
48.2
Median household income
$79,967
Bachelor's degree or higher
35.2%
Race & ethnicity: White 63.2% · Black 13% · Hispanic 18.1% · Asian 2.1%
Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Florida's 21st Congressional District in five steps
- Set the candidates. Name the contenders for the Florida's 21st Congressional District (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Florida's 21st Congressional District in the simulator →