Response review
ChatGPT · free, login_required, browser · local_node
Who is my U.S. representative in CA-10?
If you're referring to California's 10th Congressional District (CA-10) as it is currently represented in Congress, your U.S. Representative is Mark DeSaulnier, a Democrat. He has represented the district since 2015. House of Representatives +1 CA-10 includes much of central and western Contra Costa County, including communities such as Concord, Walnut Creek, Lafayette, Orinda, Moraga, Danville, San Ramon, and surrounding areas. California has adopted new congressional maps that will take effect for the 2026 elections, with the new districts becoming effective in January 2027. sos.ca.gov If you want, I can also tell you: who your California State Assembly and State Senate representatives are, or verify your representative based on your specific home address or ZIP code.
Cited sources
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.
Human
not reviewed
Final
accurate
Ground truth
representative: Mark DeSaulnier
clerk.house.gov 100
as of 2026-07-07