DSA Wins Third Primary, Ousting DeGette in Colorado

The DSA's third consecutive primary upset — following New York — signals a structural shift in the Democratic Party heading into the 2026 midterms. The Colorado results also ended Sen. Michael Bennet's gubernatorial bid, reshaping multiple competitive races. Directly relevant to US electoral politics.

The Morning Brief · July 1, 2026 · Based on reporting by Reuters

Democratic socialist Melat Kiros defeated 15-term incumbent Rep. Diana DeGette in Colorado's House primary Tuesday, marking the third Democratic Socialists of America primary victory this cycle. State Attorney General Phil Weiser also defeated Sen. Michael Bennet in the Democratic gubernatorial primary, ending Bennet's bid for governor.

Anti-establishment progressives have now toppled seasoned incumbents in back-to-back primary cycles. The wins are deepening an internal Democratic Party fight over its direction ahead of the 2026 midterms. The DSA has signaled plans for national expansion following the Colorado results.

Sources

Reuters — Progressive Democrats score big wins in Colorado: 4 takeaways from Tuesday's primaries
Anti-establishment progressives racked up another good night in Democratic primary contests, toppling seasoned office-holders in Colorado.
Read at Reuters →
NPR News — In Colorado primaries, a democratic socialist wins; Bennet's governor bid ends
Democrats nominated their candidate to try to unseat a Republican House member and tapped the state's attorney general as a frontrunner for governor.
Read at NPR News →
Fox News Politics — DSA's third major primary win deepens Democrats' fight over the party's future
The Democratic Socialists of America topple another Democratic incumbent in Colorado and eye national expansion.
Read at Fox News Politics →
The Hill — Far-left extends victory streak into Denver: Key takeaways from Colorado's primaries
Democratic socialist Melat Kiros defeated progressive Rep. Diana DeGette in a major upset, the third DSA win this cycle.
Read at The Hill →

DSA Wins Third Primary, Ousting DeGette in Colorado

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