Leftists toppled a three-decade incumbent they’d made the face of the Democratic Party’s failures on Tuesday in Denver amid an anti-establishment wave that has powered progressive and socialist midterm victories across the country.

Voters chose democratic socialist Melat Kiros, an attorney who lost her job for condemning her industry’s silence on Israel’s genocide in Gaza, ahead of longtime Rep. Diana DeGette, a Democrat representing Denver who touted progressive positions on domestic issues but drew criticism that she had grown complacent over three decades in Congress and generally followed the party line on support for Israel.

DeGette’s defeat in Colorado’s 1st Congressional District brought more bad news for Democratic incumbents reeling after losses in New York last week. Party leaders are facing a surge in public frustration with their brand and a cascade of voters who say they don’t wield power effectively. Though some Democratic leaders have discounted those races and claimed that the ascendant candidates’ vision is out of step with the party’s base, leftists and progressives are continuing to notch wins under their noses as they take the battle over the future of the Democratic Party to the polls.