Melat Kiros was working as a barista to pay her bills when she decided to run for Congress. On Tuesday night (June 30), she made history.

The 29-year-old democratic socialist defeated 15-term incumbent Rep. Diana DeGette in Colorado's 1st Congressional District Democratic primary, ending the Denver congresswoman's nearly 30-year hold on the seat in one of the biggest congressional primary upsets of the 2026 cycle.

The Associated Press called the race just after 10 p.m., with Kiros leading 49% to DeGette's 44%.

If elected in November — which is widely expected in the safely Democratic district centered on Denver — Kiros will become the first Black woman ever to represent Colorado in Congress. She would also become the first Gen Z woman elected to Congress and just the second Gen Z member of the House overall, joining Florida Democrat Maxwell Frost, who was elected in 2022.

"Denver voters of all ages, of all races, of all religions sent a clear message: We will not wait," Kiros said in her victory speech, per NPR. "This is a movement. And we are just getting started."

Kiros was born in Addis Ababa, Ethiopia, the same year DeGette first took office, and moved to Colorado as an infant. She studied political science and economics at Washington College in Maryland before earning her law degree from Notre Dame in 2022, joining Sidley Austin — one of the largest law firms in the country.

In 2023, she wrote an article defending pro-Palestinian students who were facing backlash from law firms following the Hamas attack on Israel. When the firm asked her to take it down, she refused. She was fired the next day, per TIME.

Kiros then enrolled in a Ph.D. program and worked as a barista to cover her living expenses while plotting her next move.

That next move turned out to be one of the biggest congressional primary upsets of the 2026 cycle. Kiros ran on a platform of rejecting corporate PAC money, ending U.S. military aid to Israel, abolishing ICE, supporting the Green New Deal, and a nationwide moratorium on data centers.

She was endorsed by Sen. Bernie Sanders, the Democratic Socialists of America, and Justice Democrats. Her campaign caught fire early — she nearly knocked DeGette off the ballot entirely at the party's March convention, winning 67% of delegate votes to DeGette's 32%, per Colorado Newsline.

Despite more than $1.5 million in outside spending against her — funded in part by groups linked to AIPAC, according to TIME — Kiros prevailed.

She is the seventh House incumbent to lose renomination this cycle and the third in just seven days, part of a broader wave of democratic socialist-backed victories in deep-blue districts that has rattled establishment Democrats nationwide.

"We believe that fundamental change can, and will, happen if we fight for it," Kiros said Tuesday night. "That is the message that Denver has sent to both parties, to Donald Trump, and to the entire country."

She faces Republican Christy Peterson in November's general election.

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