Good observation but the research to date (and it is too early) shows three categories of voters as workers:
a) 100 million white high school educated
b) 82 million minorities (all education levels)
c) 48 million white college/associate level education

Now, insert Sanders - reality is that he would have not gotten anywhere near enough minority votes even if he had done much better than Clinton with the 100 million white high school folks

And let's face it - what we need is facts about - would Sanders have picked up enough white, uneducated voters in Wisconsin, Michigan, and Pennsylvania to beat Trump......too much data indicates he would have done less well than Clinton.