Democratic Socialists won big in NY. Do they offer a way forward for Democrats?

On Tuesday, Congressional candidates backed by New York City Mayor Zorhan Mamdani performed well in the New York primaries.The electoral victories were a major win for Mamdani, who put his political reputation on the line by endorsing the slate of leftist candidates.But about a year ago, centrist Democrats seemed skeptical of Mamdani's politics and approach.…