Response review
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Who is my U.S. representative in MA-04?
Your representative for Massachusetts's 4th Congressional District is Jake Auchincloss, a Democrat. He's served since January 2021 and is running for re-election in 2026, currently facing a primary challenge from several Democrats including Chris Boyd, Steve Chasse, Ihssane Leckey, and Jason Poulos. The primary is scheduled for September 1, 2026, with the general election on November 3, 2026. Cook Political Report + 2 MA-04 covers the southeast area including Newton, Brookline, and Fall River. If you're near the edge of the district, it's worth double-checking your exact address against the official map, since a few districts may shift boundaries before the 2026 election. Cook Political Report
Cited sources
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Jake Auchincloss as the representative for MA-04, matching the ground truth. Additional details about the 2026 election and district coverage are supplementary and don't contradict the core answer.
Human
not reviewed
Final
accurate
Ground truth
representative: Jake Auchincloss
clerk.house.gov 100
as of 2026-07-07