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Who is my U.S. representative in MA-04?
Your U.S. representative for Massachusetts's 4th Congressional District (MA-04) is: Jake Auchincloss (Democratic Party) He has represented MA-04 in the U.S. House of Representatives since January 2021 and is serving his third term. He serves on the House Committee on Energy and Commerce. Jake Auchincloss +1 If you're in MA-04, you can contact his offices through his official House website: Congressional website Washington, DC office phone: 202-225-5931 (the House switchboard can also connect you at 202-224-3121). Jake Auchincloss +1 If you'd like, I can also tell you who your Massachusetts state senator, state representative, or U.S. senators are.
Cited sources
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Jake Auchincloss as the U.S. representative for MA-04, matching the ground truth. Some additional details (committee assignment) may be imprecise but the core answer is correct.
Human
not reviewed
Final
accurate
Ground truth
representative: Jake Auchincloss
clerk.house.gov 100
as of 2026-07-07