Democrat U.S. Rep. Yadira Caraveo conceded the 8th Congressional District race to Republican state Rep. Gabe Evans on Sunday afternoon. Why it matters: It's a major victory for Republicans, who pumped millions into the race to flip the suburban Denver seat.

The Associated Press has declared a winner in Colorado's 8th Congressional District which has been one of the most closely watched races in the country.

The race for Congress between U.S. Rep. Yadira Caraveo and Republican state Rep. Gabe Evans tipped upside down Friday evening, with the lead switching to Evans for the first time, according to newly updated results.