Debbie Wassermann-Schultz and Donna Brazille had something to do with that.
Too true, although Bernie also campaigned for clinton at least once during their "debates."
Also, every person who colluded to take Sanders off at the knees worked just as hard to beat Trump. Either they utterly exhausted themselves versus Sanders or Trump was to much for them.
Even the RINOs shilled for clinton in the general election. I think Trump might have beat Sanders worse than Reagan beat Mondale.