The Left Wins in Colorado—and It’s Not Because of Gaza or Socialism

What the insurgent wave in Democratic primaries really proves is this: It’s no longer enough to be a liberal who votes the right way most of the time.

The primaries on Tuesday in Colorado weren’t a sweeping victory for the Democratic left like last week’s in New York, where three very progressive candidates won, knocking out two incumbent members of Congress along the way. But the defeats of Representative Diana DeGette and Senator Michael Bennet in his gubernatorial bid and the strong challenge to incumbent Senator John Hickenlooper are the latest signs of a shift happening across the country: It’s no longer enough for Democratic politicians to just vote the right way on key issues. The party base is looking for fighters and disrupters—and will cast aside solid politicians who they don’t think will aggressively battle Donald Trump, MAGA, and right-wing billionaires.

Unlike New York, where there were three House candidates backed by Mayor Zohran Mamdani and effectively running as a slate, Colorado’s primaries were more ideologically complicated. Melat Kiros, a democratic socialist who was backed by the Democratic Socialists of America, Senator Bernie Sanders, and other progressive leaders and groups both in Colorado and across the country, fairly easily defeated DeGette, who has represented the Denver area since 1997. Kiros will likely defeat the longtime incumbent by double digits, a result no one would have anticipated a few months ago.

State Senator Julie Gonzales, who was not endorsed by the DSA but had the support of many progressive groups in the state, lost to Hickenlooper but received more than 45 percent of the vote, an unusually high number when facing an incumbent senator.

Attorney General Phil Weiser won comfortably in the gubernatorial primary over Bennet, who had been considered the heavy front-runner until recently. Weiser isn’t much more........

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