With Biden sinking and impeachment over, the party establishment has to face up to an existential nightmare of a house divided.

Sanders’ socialist ally, charismatic Bronx/Queens Rep. Alexandria Ocasio-Cortez, summed up the division when she said, “In any other country Joe Biden and I would not be in the same party.”

Without Biden, it’s hard to see how Democrats stop a takeover by Sanders and unelectable radical socialists, and avoids a debilitating civil war at the July nominating convention in Milwaukee. Michael Bloomberg’s billions won’t be enough.

The debacle of their failed caucus phone app, designed by Clintonistas, was the perfect metaphor for this creaky, crooked Democratic machine in its death throes.