Democratic Party Civil War Deepens as Socialists Unseat Longtime Incumbents From New York to Colorado

Melat Kiros’ stunning defeat of Rep. Diana DeGette marks another warning sign for Democratic centrists as socialist-backed candidates gain momentum in deep-blue districts.

by Emmitt Barry, Worthy News Washington D.C. Bureau Chief

(Worthy News) – The Democratic Party’s internal civil war is no longer theoretical. From New York last week to Colorado on Tuesday night, socialist and hard-left progressive candidates are increasingly toppling establishment Democrats, forcing party leaders to confront a movement that is no longer content to merely influence the party from the sidelines.

In the latest political earthquake, democratic socialist Melat Kiros defeated Rep. Diana DeGette in Colorado’s 1st Congressional District Democratic primary, ending the nearly 30-year congressional career of one of the state’s most entrenched Democratic incumbents. DeGette, a 15-term congresswoman representing Denver, was defeated by Kiros, a 29-year-old first-time candidate and former attorney. The Associated Press called the race a stunning victory for another Democratic Socialists of America-aligned candidate, while Reuters reported that Kiros’ win adds to a broader wave of democratic socialist victories in New York and other deep-blue areas.

Kiros’ victory was not simply a generational upset. It was another sign that Democratic voters in heavily liberal urban districts are increasingly willing to reject experienced party veterans in favor of candidates promising confrontation, ideological purity and sweeping socialist reforms. The Denver-based district is considered safely Democratic, meaning Kiros is now strongly positioned to enter Congress in January after the November general election. Axios reported that Kiros is poised to become the first Black woman to represent Colorado in Congress if she wins in November.

The result follows a string of left-wing victories in New York, where democratic socialists and progressive insurgents defeated establishment-backed candidates in congressional primaries. Those wins were boosted by New York City Mayor Zohran Mamdani, a democratic socialist who has become a national symbol of the party’s leftward revolt. Mamdani recently argued that democratic socialist candidates “can get elected anywhere across this country for any position,” a message that is now reverberating beyond New York and into Colorado.

Kiros made clear in her victory speech that she sees the result as a national message, not merely a local one. She pledged to fight President Trump, oppose corporate political influence, push Medicare for All, abolish Immigration and Customs Enforcement, reject corporate PAC money and confront the pro-Israel lobby. She has also called for ending U.S. military support for Israel and has accused Israel of genocide in Gaza, placing foreign policy — especially Israel — at the center of the divide between the party’s establishment wing and its rising socialist flank.

That divide proved especially sharp in the Denver race. DeGette, though long considered a liberal Democrat, represented the older institutional wing of the party: experienced, committee-driven and more traditionally aligned with Democratic leadership. Kiros ran against that model, arguing that long-serving incumbents had become too comfortable and ineffective at delivering the aggressive change demanded by left-wing voters.

The Colorado results, however, showed that the socialist surge is powerful but not yet universal. Sen. John Hickenlooper, a more centrist Democrat, defeated state Sen. Julie Gonzales, who had described herself as an insurgent progressive and previously said she had been affiliated with the Democratic Socialists of America. Hickenlooper’s win suggested that statewide Democratic electorates remain more cautious than deep-blue urban districts.

Still, the overall direction of the party’s energy was difficult to miss. In Colorado’s 8th Congressional District, state Rep. Manny Rutinel, the more progressive Democratic candidate, defeated former state Rep. Shannon Bird, who had been viewed by party leaders as the more moderate and electable option against Republican Rep. Gabe Evans. The seat is expected to be one of the races that could help determine control of the House.

The gubernatorial race also reflected the party’s leftward pressure. Colorado Attorney General Phil Weiser defeated Sen. Michael Bennet in the Democratic primary after a campaign in which both men struggled to distinguish their agendas and instead competed over who would fight Trump more aggressively. Weiser is widely viewed as more sympathetic to the party’s progressive wing than outgoing Gov. Jared Polis, who often governed with a more moderate touch.

For Democratic centrists, the warning signs are multiplying. Longtime incumbency, institutional endorsements and establishment backing are no longer enough in the safest Democratic districts. Voters on the party’s left are demanding candidates who promise confrontation, economic redistribution and a sharp break with traditional Democratic foreign policy, especially on Israel.

For Republicans, the Democratic infighting offers a potent political argument heading into November: that the party’s center is collapsing under pressure from socialists and anti-Israel activists. For Democrats, the challenge is more immediate and more painful — whether the party can hold together a coalition increasingly divided between old-guard liberals and a younger socialist movement determined to seize power from within.

The Colorado results did not settle that fight. They made clear it is only intensifying.

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