Progressives had a big night in Colorado's primaries Tuesday, led by Melat Kiros, who was poised to unseat 15-term incumbent Rep. Diana DeGette.

Melat Kiros, a 29-year-old democratic socialist and lawyer, is challenging 15-term Rep. Diana DeGette for a solidly blue seat in Denver, where she and her allies hope voters are…

Colorado's Democratic primaries reflect a debate over the party's future. Voters are deciding between younger, further-left candidates and more traditional Democrats.

Colorado's primary has Democratic incumbents fighting off challenges ranging from progressive newcomers to state lawmakers seeking higher office.

Democratic Rep. Diana DeGette didn’t take Melat Kiros seriously. Now she’s scrambling to convince Colorado voters she’s still the progressive pick.

Rep. Diana DeGette faces her toughest re-election fight yet, against 29-year-old attorney and democratic socialist Melat Kiros.

Rep. Diana DeGette, a 15-term incumbent, is facing her most serious primary challenge yet.

Democrats nominated their candidate to try to unseat a Republican House member and tapped the state's attorney general as a frontrunner for governor.

DeGette, who has served in Congress for three decades, lost her primary to the 29-year-old Kiros, NBC News projects.

In a stunning upset, the 29-year-old lawyer defeated the Denver congresswoman who has held this seat for nearly three decades.

Twenty-nine-year-old beat Representative Diana DeGette in deep-blue Denver district

Giro progresista en Colorado. Los votantes de las primarias demócratas celebradas este martes ha decidido entre candidatos más jovenes y progresistas o seguir apostando por los…

Challenger Melat Kiros, a democratic socialist, is the projected winner of the Democratic primary in Colorado's First Congressional District.

Democrats' generational war continued, as Sen. John Hickenlooper won, Sen. Michael Bennet lost, and socialist Melat Kiros upsets Rep. Diana DeGette.

The race was the latest test of voters’ appetite for socialist-aligned candidates after victories in New York City and Washington, D.C.

Democratic socialist Melat Kiros wins Colorado House primary, defeating incumbent Diana DeGette and signaling a shift in party dynamics.

Progressives had a big night in Colorado's primaries Tuesday, led by Melat Kiros, who was poised to unseat 15-term incumbent Rep. Diana DeGette.

Democratic socialist Melat Kiros beat Rep. Diana DeGette in a Colorado primary Tuesday, a stunning victory for the first-time candidate against a nearly 30-year incumbent

The anti-establishment wave surging through the Democratic Party reached Colorado on Tuesday, when democratic socialist Melat Kiros dislodged 15-term Rep. Diana DeGette, and state…

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“We won tonight, but this is also something so much bigger than this moment," said Kiros, a 29-year-old democratic socialist.