Liberals are rising in Polarization Nation. Last night's upset of 10-term Rep. Joe Crowley of Queens points to Democratic energy that could fuel a House takeover in November.
What happened: Crowley — the No. 4 House Democrat, and the party's first incumbent to be knocked off this primary season — was shellacked 57%-43% to Alexandria Ocasio-Cortez, a former organizer for Bernie Sanders. It was the biggest congressional upset since House Majority Leader Eric Cantor lost in 2014.