Is Peter Beinart Right About a ‘New New Left’?

http://www.thenation.com/blog/176267/peter-beinart-right-about-new-new-left

From the site:

Peter Beinart is out with a major new argument in The Daily Beast about what the political future might hold in store for us. The headline writer calls it “The Rise of the New New Left,” and it begins by citing the recent victory of liberal populist Bill de Blasio in New York’s mayoral primary. “The deeper you look,” Beinart writes, “the stronger the evidence that de Blasio’s victory is an omen of what may be the defining story of America’s next political era: the challenge, to both parties, from the left.”