Response review
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Who is my U.S. representative in CA-10?
Your U.S. representative for California's 10th Congressional District (CA-10) is Mark DeSaulnier. He is a Democrat and has represented the district since 2015. The district includes much of Contra Costa County and part of Alameda County. desaulnier.house.gov +1
Cited sources
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Mark DeSaulnier as the representative, matching the ground truth. Additional context about party and district is provided and does not contradict the answer.
Human
not reviewed
Final
accurate
Ground truth
representative: Mark DeSaulnier
clerk.house.gov 100
as of 2026-07-07