DENVER—Progressive candidates scored a series of significant victories in Colorado's Democratic primary elections, delivering setbacks to several establishment figures and underscoring the growing influence of the party's left flank ahead of the November general election.
The night's biggest upset came in Colorado's 1st Congressional District, where democratic socialist Melat Kiros defeated 15-term U.S. Representative Diana DeGette in the Democratic primary for the safely Democratic Denver-area seat. Major U.S. media organizations projected Kiros the winner after vote counts showed her maintaining a decisive lead, positioning the 29-year-old first-time congressional candidate as the overwhelming favorite in November.
Kiros, a former attorney and labor organizer endorsed by Senator Bernie Sanders, campaigned on expanding government-funded healthcare, affordable housing, labor protections and campaign finance reform. Her victory marked one of the highest-profile defeats for an incumbent Democrat this election cycle and followed a string of recent progressive primary successes in other states.
Elsewhere, Democratic state Representative Manny Rutinel won the party's nomination in Colorado's 8th Congressional District, defeating former state Representative Shannon Bird. The district, currently represented by Republican Gabe Evans, is expected to be among the nation's most closely watched U.S. House contests in November and could play a role in determining control of the chamber.
In the race for governor, Colorado Attorney General Phil Weiser defeated U.S. Senator Michael Bennet in the Democratic primary to succeed term-limited Governor Jared Polis. Bennet's loss ended his bid to return to state politics after more than a decade in the Senate and represented another defeat for a nationally recognized Democratic officeholder.
Political analysts said the results reflected continued frustration among many Democratic primary voters with established party leadership and highlighted a broader debate within the party over its ideological direction. Progressive candidates have argued that Democrats should embrace more ambitious economic and social policies, while many party leaders have emphasized building broad coalitions to remain competitive in general elections.
Colorado's primary results add to a series of recent contests in which younger progressive candidates have unseated veteran officeholders, reinforcing a trend that party strategists will continue to assess as campaigns shift toward the November general election. Several of the newly nominated Democratic candidates now face either heavily favored paths to Congress in safely Democratic districts or competitive races expected to draw national attention.
