it's possible, probably likely given the last 2 elections, that someone no one is even thinking about will rocket to the top.
hussein came out of left field in '08. everyone assumed that whole election was just a coronation for crooked hillary. barry was just some junior senator no one outside of illinois or hawaii had ever heard of outside of a speech or two at conventions.
same with '16- again, choking ass crooked hillary was expected to be the heir apparent. then some crusty old independent socialist from vermont came out of left field and put the fear of the holy ghost in her and the dnc.
at this point, i wouldn't be surprised if we look up 2 years from now and dwayne 'the rock' johnson is the dem nominee. it sounds ridiculous... but who would really be surprised?
also, surprised to not see andrew cuomo or eric holder on the list.