[lodi90]

Trump/Rubio/Bush/Cruz/Fiorina will all be around until Florida guaranteed. That’s a five person race, minimum. Trump at 30% wins going away.

[Vigilanteman]

Yep. At least four of the five and maybe all five. Six if you include Ben Carson, who might have some staying power based on a good performance in Iowa.

Note that Trump is a much better candidate than Romney and Romney had it down to three by Florida-- him, Newt and Santorum. He had it sewn up by mid-March, even though it took a handful of later primaries to win a clear majority of the delegates.