And how of many of his supporters stay with him until the end. 50%?? 30%??
Of those who could possibly migrate where could they go:
Kerry? Highly doubtful since Kerry continually attacked Dean for the past couple of months. Also, Kerry's a "Washington Democrat."
Clark?? Clark has been critical of Dean on a few occasions, but pales in comparison to Kerry and Joe Looserman. Clark's a non~Washington Democrat like Dean and he has held an Executive Office position like Dean. Also, it appears some progressive, like Michael Moore, are warming up to Clark.
Edwards?? He's been the most positive on the campaign and I don't recall him attacking Dean. But he's a "Washington Democrat." However, he hasn't been one for all too long.
All in all, it appears Clark & Edwards could split the Dean migration vote, w/ Clark holding a slight lead.