Ruoss, a Bush supporter, said the choices Florida voters will have to make in the March 15 primary will be shaped by the earlier contests in Iowa and New Hampshire. "Iowa means a lot more for Trump and Cruz, and for the rest of the candidates you have to prove yourself viable in New Hampshire. I don't think anyone who finishes fifth or below in New Hampshire is going to stay in the race. After that I think the field is going to get smaller."