A 29-year-old democratic socialist backed by Bernie Sanders and the Democratic Socialists of America toppled Rep. Diana DeGette in Colorado's First Congressional District primary Tuesday, ending a nearly three-decade congressional career and extending a pattern of far-left insurgents removing establishment Democrats from safe seats across the country.
Melat Kiros, an Ethiopian immigrant who describes herself as a lawyer, PhD student, and barista, defeated DeGette 49.3 percent to 43.5 percent with 78 percent of ballots counted, the Daily Caller reported. DeGette first won the Denver-based seat in 1997, the same year Kiros was born.
The result makes Kiros the heavy favorite in November. The district gave Kamala Harris 77 percent of the vote in 2024 and has not sent a Republican to Congress since 1970. In practical terms, the Democratic primary is the general election, and voters just handed it to a candidate endorsed by DSA, Justice Democrats, Our Revolution, and Track AIPAC, a coalition that reads like a roster of the party's most radical flank.
Kiros's political origin story traces to a single open letter. Approximately one month after Hamas's October 7, 2023 surprise attacks on Israel, she published a piece on Medium sharply critical of the Israeli government. In it, she wrote:
"And despite claiming to be the one and only democracy in the Middle East, the Israeli government has weaponized anti-Semitism to defend its crimes against the Palestinian people and quell any resistance or critique against it."
The letter, which the source notes also condemned antisemitism, cost Kiros her job. Sidley Austin, the white-shoe law firm where she worked in New York City, fired her in November 2023. National Review reported that Kiros said she was asked to take the letter down, refused, and was terminated.
She turned the firing into a campaign brand. On her campaign website, Kiros declared:
"When I spoke out against the genocide in Gaza, powerful people told me to stay silent or it would cost me my job. I didn't back down. Now I'll do the same in Congress."
The word "genocide" is Kiros's characterization, not an established legal finding. But the framing worked with Denver's progressive primary electorate, and it turned DeGette's vote to provide Israel with aid after October 7 into a political liability. That House resolution passed 412-10, a nearly unanimous margin that reflected broad bipartisan support for Israel at the time. In Colorado's First District, it became an albatross.
Only two people had represented Colorado's First Congressional District in the past half century: DeGette and her predecessor, the late Pat Schroeder. DeGette was a member of the Congressional Progressive Caucus. She carried endorsements from Colorado's Democratic congressional delegation, the House Progressive Caucus, Planned Parenthood, and major labor unions, the New York Post reported.
None of it mattered. The warning signs were visible months earlier. At the Denver county Democratic assembly in March, Kiros captured 63 percent of the delegate vote. DeGette scraped by with 32 percent, barely clearing the 30 percent threshold required to make the primary ballot at all.
DeGette tried to make experience the issue. She told voters, "Now is not the time to gamble and send somebody with no experience to Washington." The 68-year-old incumbent's argument fell flat against a challenger who framed the race as a referendum on Democratic leadership itself.
Kiros offered a blunt counter: "The reality is Democrats have the worst approval rating we've had in decades, because we've failed to actually do anything for working people." That line captures something the Democratic establishment has struggled to answer, not because the claim is necessarily fair, but because enough of their own voters believe it to flip primaries.
AP News reported that DeGette did not speak or release a statement after the race was called Tuesday night.
Kiros's victory did not happen in isolation. Just one week earlier, a trio of left-wing House candidates backed by socialist New York City Mayor Zohran Mamdani won contested Democratic House primaries, with two of the three unseating incumbent lawmakers. That wave of Jeffries-backed candidates falling in New York primaries signaled that the socialist insurgency within the Democratic Party had grown from a curiosity into a force capable of reshaping the caucus.
In May, DSA-backed candidate Chris Rabb won the Democratic nomination for a deep blue Philadelphia-based seat, adding another socialist to the pipeline. Rabb also endorsed Kiros.
The organizational infrastructure behind these wins is familiar. Justice Democrats, the group that helped propel Alexandria Ocasio-Cortez past a longtime incumbent in a 2018 New York primary, endorsed Kiros. So did Our Revolution, the group that grew out of Sanders's 2016 presidential campaign. Kiros is the same age Ocasio-Cortez was when she first won her seat. The playbook is now well-worn: identify a safe Democratic district with a long-tenured incumbent, run a young challenger to the left on identity and foreign policy, and let the primary electorate do the rest.
Democratic leaders have so far brushed off the socialist primary rout as isolated events rather than a structural problem. That posture grows harder to maintain with each incumbent who falls.
Kiros's policy positions extend well beyond Gaza. Breitbart reported that she ran on Medicare for All, abolishing ICE, mass amnesty for illegal immigrants, and restorative justice programs. Her father legally immigrated to the United States through the Diversity Visa Lottery in May 1997, weeks after her birth.
At the Denver county Democratic assembly in March, Kiros introduced herself this way: "My name is Melat Kiros. I'm a lawyer. I'm a PhD student. I'm a barista. And I'm an immigrant." The line was crafted for a progressive audience, and it landed.
But her public statements go further than standard progressive fare. The Washington Free Beacon reported that Kiros called both the October 7 Hamas attack and the September 11 terror attacks "inevitable." She explained the September 11 characterization by saying it was "inevitable in the sense that we destabilized a lot of the Middle East that forced people to believe that another act of violence was the only response."
That framing, casting mass-casualty terrorist attacks against American civilians as a predictable consequence of U.S. foreign policy, is a position that would have disqualified a candidate in most districts a decade ago. In Denver's Democratic primary in 2026, it was apparently no obstacle.
After her victory, Kiros declared: "We are winning from coast to coast. We are taking back our party and our country!" The statement was not an exaggeration of the trend, even if the word "our" does a lot of work. The Democratic Party's safe-seat primaries are increasingly controlled by an activist base that views mainstream Democratic incumbents as insufficiently left-wing, and that has the organizational muscle to remove them.
The silence from party leadership has been conspicuous. Senior Democrats went quiet after the New York City socialist sweep, and the Colorado result has only deepened the awkwardness. Some within the party have begun saying out loud what others are thinking. James Carville has called for a Democratic Party "schism" in response to the primary losses, warning that the leftward lurch will cost the party in competitive general elections even as it reshapes safe-seat representation.
Whether moderate Democrats heed that warning or continue to look the other way is an open question. What is not open to debate is the direction of travel. DSA-backed candidates are not winning swing districts. They are capturing the internal machinery of the Democratic Party in its deepest-blue strongholds, replacing veteran lawmakers with first-time candidates who campaign on abolishing federal agencies, granting mass amnesty, and describing terrorist attacks on American soil as foreseeable blowback.
Diana DeGette spent 29 years in Congress. She was a member of the Progressive Caucus, backed by every major institutional player in Democratic politics, and she still was not left enough for her own voters. That tells you less about DeGette than it does about where the Democratic Party's base is headed, and how little its leaders seem willing to do about it.