As politics is a zero sum game, the better Mike Huckabee does, the worse Mitt Romney does... and so it doesn't matter all too much...that McCain seems to be underperforming,as he is. (It's going to be mighty hard for McCain to unite the party...but that's not the story tonight.
The McCain / Huckabee collusion -- explicit in West Virginia and implicit / unofficial / unintended everywhere else -- is a major story tonight.
Huckabee's victories are likely to put enormous pressure on the well-funded Romney to drop out...If his money cannot buy him victories outside a few caucus states, Massachusetts and Utah, he does not have any pretext for continuing.
McCain would much rather face Huckabee than Romney.