A 29-year-old democratic socialist is challenging a 15-term Democratic congresswoman in Denver, and the race is not an outlier. It is part of a coordinated national campaign by the Democratic Socialists of America to dismantle the Democratic Party's establishment from the inside out.
The DSA's push into Colorado follows a string of primary upsets that have rattled Democratic leadership and exposed deep fractures within the party. Fox News reported that socialist organizers are now targeting Western states after building momentum in New York, Pennsylvania, and California. Colorado, with its progressive urban base and competitive primaries, sits squarely in the crosshairs.
The clearest evidence of the DSA's growing power came out of New York City, where Mayor Zohran Mamdani's progressive slate swept establishment Democrats in congressional primaries. AP News reported that two sitting Democratic congressmen, Adriano Espaillat and Dan Goldman, were ousted by Mamdani-backed challengers. House Democratic Leader Hakeem Jeffries had actively campaigned for both incumbents. He lost on both fronts.
All three Mamdani-backed candidates ran on platforms calling to abolish ICE, condemn Israel's actions in Gaza as "genocide," and "tax the rich." These are not moderate Democrats trimming around the edges. They represent a sharp leftward lurch that the party's leadership has so far failed to contain.
Mamdani framed the wins as a movement, not a moment. He declared after the results came in:
"A year ago, it was not the end of a political movement. It was the beginning."
Darializa Avila Chevalier, who defeated Congressional Hispanic Caucus Chairman Espaillat, struck a similar tone:
"Today we make it clear: the politics of the past ends today."
Avila Chevalier's victory drew particular scrutiny. The Washington Examiner noted her ties to a group that had called for "death to America," a connection that did not prevent her from toppling a longtime incumbent. Claire Valdez, another DSA-backed candidate, defeated Brooklyn Borough President Antonio Reynoso by 20 points in a separate race, underscoring the scale of the rout.
The New York sweep was dramatic, but the DSA's gains extend well beyond a single city. DSA-backed candidates have won 35 of 150 primary races in the 2026 cycle, capturing nearly half of the contests they entered. That win rate transforms the DSA from a protest movement into what the Washington Examiner described as "a formidable electoral force within the broader Democratic coalition."
Prominent DSA members now include Rep. Alexandria Ocasio-Cortez, Rep. Rashida Tlaib, and New York City Mayor Mamdani himself. The organization's bench is growing cycle by cycle, and its candidates are no longer confined to safe blue districts in the Northeast.
DSA-backed candidates are winning or leading primaries in Pennsylvania, California, and now Colorado. The pattern suggests a national strategy, not a regional fluke. DSA Co-Chairman Ashik Siddique made the ambition explicit in comments reported by National Review:
"New York City, we think, is really reflecting where the whole country is going at this point, so we're very excited, and we want to keep building from it."
The primary results carry immediate consequences for House Democratic leadership. The New York Post reported that Jeffries suffered significant defeats in three New York congressional primaries, with far-left and socialist candidates defeating his preferred picks. The incoming class of DSA-aligned members has not committed to supporting Jeffries as leader, a development that could threaten his path to the speakership or even his ability to hold the caucus together.
Brad Lander, one of the winning candidates, offered only conditional backing for Jeffries. He signaled that loyalty would depend on performance:
"Progressive and moderate Democrats, across the whole spectrum, are going to have to have consensus behind a leader... there are moments when you have to be willing to speak up courageously when you don't think people are fighting hard enough."
That is not an endorsement. It is a warning. Jeffries now faces a caucus where a growing bloc of members owes him nothing and views the party's traditional power brokers as obstacles rather than allies.
The Denver race crystallizes the DSA's western expansion. A 29-year-old socialist challenger is taking on a congresswoman who has held her seat for 15 terms. The incumbent represents exactly the kind of entrenched Democratic figure the DSA has learned to target: long tenure, deep institutional ties, and a voting record that socialist activists view as insufficiently progressive.
Colorado's political landscape makes it fertile ground for this kind of challenge. The state's Democratic primaries draw heavily from urban voters in Denver and Boulder, constituencies that have shown increasing appetite for candidates running to the left of the party establishment. The DSA's success in New York and elsewhere provides both a template and a fundraising narrative for insurgent campaigns in the Mountain West.
The internal Democratic fracturing is not limited to primary challenges. In Pennsylvania, a state Supreme Court justice recently walked away from the Democratic Party, citing what he described as the party's tolerance of antisemitism. That departure illustrates how the leftward shift is pushing out not just moderate voters but sitting members of the judiciary.
The DSA's rise forces a question that Democratic leaders have avoided answering directly: who controls the party? The establishment wing, represented by figures like Jeffries and the incumbents who lost their seats, built its power on coalition politics, institutional relationships, and incremental policy gains. The socialist wing rejects that model entirely.
DSA-backed candidates campaigned on abolishing ICE, imposing wealth taxes, and reframing U.S. foreign policy around accusations of genocide. These are not positions that play well in swing districts. They are positions designed to mobilize a base that views the Democratic mainstream as complicit in systems it wants to tear down.
The tension has surfaced in other ways across the party. Sen. John Fetterman publicly called out Mamdani over the New York mayor's vow to defy a Supreme Court ruling, warning that such rhetoric leads to constitutional crisis. That a sitting Democratic senator felt compelled to publicly rebuke a Democratic mayor over rule-of-law concerns speaks to how far the party's internal divisions have traveled.
The DSA's 35 primary wins also raise practical questions for the general election. Candidates who run on abolishing federal agencies and accusing allied nations of genocide give Republican opponents clear lines of attack in competitive districts. The DSA may be winning primaries, but whether those victories translate into general-election seats remains an open question.
Authorities within the Democratic Party have not publicly outlined a strategy for containing the socialist insurgency. Jeffries' approach of endorsing incumbents and campaigning against DSA challengers failed in New York. No alternative strategy has emerged.
The Colorado primary will test whether the DSA's model travels beyond its strongholds in New York and other deep-blue urban cores. A win against a 15-term incumbent in Denver would confirm that the movement has national reach and staying power. A loss would suggest natural limits to the socialist surge.
Either way, the 2026 cycle has already reshaped the Democratic Party's internal power dynamics. Thirty-five primary victories in a single cycle is not a protest. It is an organized takeover attempt with real infrastructure, real candidates, and real results.
The broader pattern of Democratic disarray extends beyond primaries. Vice President Kamala Harris drew sharp criticism for pushing to overhaul the Supreme Court and the Electoral College, proposals that critics labeled institutional arson. When a party's leaders are simultaneously fighting off socialist challengers from below and fielding accusations of radicalism from above, the word "coalition" starts to lose its meaning.
At the local level, the leftward drift has produced its own controversies. In Texas, a Harris County DA candidate pledged fewer arrests even as Houston crime remained a flashpoint for voters, illustrating how progressive criminal-justice platforms continue to collide with public-safety concerns in major cities.
For conservatives watching the Democratic Party consume itself, the spectacle is clarifying. The question is no longer whether the socialist wing will challenge the establishment. It is whether the establishment has anything left to fight back with.
