Here’s an interesting comment:

Democratic presidential primary 2.0 elects a total of 2033 pledged delegates. If Bernie Sanders wins those races (and delegates) by the same 60-40 margin that he has amassed in primaries and caucuses outside the “Old South” to date, then that will give him an advantage of 407 pledged delegates. That is more — far more — than the current Clinton margin of 223.

Almost 700 pledged delegates are chosen on June 7 alone. It seems unlikely that either candidate will accumulate a margin of 700 pledged delegates before then. So this one may come down to the wire.

I don’t think the person is correct about the margins outside of the south, because otherwise he would have won Illinois, Missouri, and Massachusetts. Does anyone have a way to calculate that?