This is why the Johnson/Weld team is going to attract more dems than Republicans. The Reagan Democrats are going to break for Trump. The J/W team is sort of Hillary light without as much baggage.
Pretty much because Hillary is so disliked those folks who were Reagan Dems have gone over to Mr. Trump. As you have said, those Dems who will not support Hillary will go over to Mr. Johnson while those who have supported Bernie will either go to Mr. Trump, Ms. Stein or simply stay home.