I would think so - if in fact "win" means what it has traditionally. But I think they changed the rules this time around, giving the candidates proportional delegates. If that's so, even an outright majority of the popular vote wouldn't map to a win of all delegates. And if that is the case, a brokered convention is pretty much a sure thing.
There will be no brokered convention.
Gingrich is going to win big in the South an Mountain West.
Right now he is even winning in Michigan of all places.