Bernie Bros will walk if he’s denied the nomination...
GO BERNIE!
The rats have a dilemma.
If they stay with Joe, his sleaze will destroy him and many down ticket. Many more will fall with Joe's gaffes. Their only sensible option is to go with charisma weak Sen. Klobuchar, Gay mayor Pete or sometime Republican billionaire parachutist Bloomberg.
If I were a Democrat, my choice would be Bloomberg as the least vulnerable, least crazy, best financed, very likely to be a good loser. He would keep the party in tact and produce few gaffes. Apparently an individual of relative reason (as opposed to the certifiably crazy) Bloomberg might stop the party from disintegrating and save the House. He would, however, be anathema to Bernie's crazies.