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Who is my U.S. representative in CO-01?
The current U.S. representative for Colorado's 1st Congressional District (CO-01) is Diana DeGette, a Democrat. She has represented the district since 1997. Congresswoman Diana DeGette +1 CO-01 includes most of the City and County of Denver, along with the enclaves of Glendale and Holly Hills. Congresswoman Diana DeGette +1 If you're looking for her office, her district office is in downtown Denver, and her Washington office is in the Rayburn House Office Building. Congresswoman Diana DeGette
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The response correctly identifies Diana DeGette as the U.S. representative for CO-01, matching the ground truth.
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Ground truth
representative: Diana DeGette
clerk.house.gov 100
as of 2026-07-07