Florida's 21st Congressional District is represented by Brian Mast (Republican), who has served in the House since 2017 and has represented this district since redistricting in 2023. Mast has an overall VoteSee report card grade of C, voted in 97% of roll-call votes on bills this Congress, and votes with the Republican majority 90% of the time. The district includes Port St. Lucie, Jupiter, and Palm Beach Gardens. It takes in all or part of 3 counties; the most populous parts are in St. Lucie County and Palm Beach County. About 812,000 people live in the district, and the median household income is $82,154.
Brian Mast (Republican) has served in the House since 2017 and has represented Florida's 21st Congressional District since redistricting in 2023.
See Brian Mast's full voting record and issue positions →
Winner: Brian Mast.
Incumbent Brian Mast is running for re-election. 3 candidates were on the Nov 3, 2026 ballot.
Fewer than 2 polls ended in the last 30 days, so there is no average.
| Pollster | Dates | Sample | Mast | Martin |
|---|---|---|---|---|
| Upswing Research & Strategy (D) | Sep 21, 2026 – Sep 25, 2026 | 402 LV | 49% | 38% |
Polls compiled from Wikipedia; see each pollster for full results.
Source: American Community Survey 2020–2024 5-year estimates, 119th Congress boundaries.
Members of Congress who previously represented Florida's 21st Congressional District. District lines are redrawn after each census, so earlier members may have represented a different area under this number.
Florida's 21st Congressional District covers 1,506 square miles of land. Boundaries are for the current (119th) Congress.