Almost immediately after scoring a series of upset victories in New York last week, members of the rising progressive movement started looking ahead to their next target: Colorado’s 1st Congressional District.

Melat Kiros, a 29-year-old democratic socialist and lawyer, is challenging 15-term Rep. Diana DeGette for the solidly blue seat in Denver, where she and her allies hope voters are also ready for change.

“I think voters have realized that the party and leadership are failing to meet this moment in a meaningful way, and it’s time for leaders who are actually going to be fighting for the interests of working people,” Kiros told CNN.

But as an emboldened left flank looks to Tuesday’s primaries, seeking to build on momentum after all of New York City Mayor Zohran Mamdani’s US House endorsements won their races, some warn that Denver isn’t New York City.

Ted Trimpa, a longtime Democratic strategist who helped build up Colorado’s Democratic infrastructure, warned his party against reading too much into last week’s results.