Bernie has the best chance; the Hillary bloc prevented him last election. Biden's time has come and gone. Buttlieg, not a chance, ditto with Klobuchar. Bloomberg, no passion. Probably going to be a Bernie/Warren ticket for the Dems.
Bernie/Warren. Egads...a communist and a fake indian communist lite. What an uninspiring ticket and with a very real possibility that Sanders won't last even through one term a president liarwatha is possible when Bernard has another heart attack. This is a trump win AINEC.