Response review
Claude · paid, login_required, browser · local_node
Who is my U.S. representative in FL-21?
Your current U.S. Representative for Florida's 21st District is Brian Mast (R), who has held the seat since 2023. He's running for re-election in the Republican primary for the district on August 18, 2026. Ballotpedia A few things worth flagging: FL-21 covers the Treasure Coast, including all of St. Lucie and Martin counties plus part of northeastern Palm Beach County — so double-check that's actually your area, since district numbers occasionally get reshuffled. Wikipedia Florida passed a new congressional map in April 2026 that takes effect for this year's elections, expected to shift the state's overall partisan split to 24–4 Republican-Democratic — so it's worth confirming your address still falls in FL-21 under the new lines rather than assuming the old map applies. Wikipedia The 2026 election (with primary on August 18 and general on November 3) is underway, so if you want to double check your specific address, the House website (house.gov) has a "Find Your Representative" lookup tool. Local Candidates
Cited sources
- https://ballotpedia.org/Florida's_21st_Congressional_District
- https://en.wikipedia.org/wiki/Florida's_21st_congressional_district
- https://en.wikipedia.org/wiki/2026_United_States_House_of_Representatives_elections_in_Florida
- https://www.localcandidates.org/elections/2026-us-house-of-representatives-fl-21
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Brian Mast as the U.S. Representative for FL-21, matching the ground truth. However, it includes some potentially fabricated details about a 2026 map change and election dates.
hallucinated
Human
not reviewed
Final
accurate
Ground truth
representative: Brian Mast
clerk.house.gov 100
as of 2026-07-07