Some would, and would help Donald. Some would stay with Bernie and would hurt Hillary. Either way he wins.
Just by tweeting this, he has won.
He's dog-whistling to the Bernie crowd, as he has been doing for some time. "Join me, and help me fight corruption!" It's not like those people like Hillary anyway. Peeling even a very few is a win that cost him nothing more than a tweet (which will be much discussed) and a few throw-away lines in rallies.
Hillary now has to respond by appealing to Bernie voters, who she really shouldn't have to beg for... making her appear weak.
And... just a little tweak at the GOPe, too.
,bSome would, and would help Donald. Some would stay with Bernie and would hurt Hillary. Either way he wins.