In an effort to dispel the semantic embroglio we seem to have conjured up I suggest we call Hillary a liberal (in the Wilson/Jane Adams vein) and Bernie can be called a Lefty in the Gene Debs style, although Debs was more to the left than Bernie.
The term progressive has lost any meaning at this point, anyway.
Phil, I think there is something to that. I also think he might have a meltdown before the convention. He doesn't seem to be able to play hardball.