Response review
Claude · paid, api, api · api
Who is my U.S. representative in CA-10?
Captured 2026-07-10 21:00:04 UTC
Model claude-opus-4-8
I'll look that up for you. Your U.S. representative in California's 10th congressional district is **Mark DeSaulnier (D)**. California's 10th congressional district is a congressional district in the San Francisco Bay Area, currently represented by Democrat Mark DeSaulnier. Since redistricting in 2022, the 10th district is mostly in Contra Costa County with a small portion in Alameda County. A note for accuracy: districts can shift, and due to the passing of Proposition 50, the boundaries of the district changed—the district includes a majority of Contra Costa County and parts of Alameda County. If you'd like, tell me your city or ZIP code and I can help confirm you're actually in CA-10, since district boundaries may not match what you expect.
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Mark DeSaulnier as the U.S. representative for CA-10, matching the ground truth. The added claim about Proposition 50 changing boundaries is questionable but does not affect the core answer.
Human
not reviewed
Final
accurate
Ground truth
representative: Mark DeSaulnier
clerk.house.gov 100
as of 2026-07-07