This reminds me of why I've long loathed the presidential primary system. No matter how early other states move their primaries, it's "all over" by the time more than a few states have voted.
Republican's don't get a battle like Obama & Hillary had. We get some ego candidates who have no shot, those the press pimp as 'worthy' fodder and then the establishment candidates at the top.
Iowa voters will only support the candidates who want to keep the ethanol subsidies.
Let the candidates campaign for a few months; then have the primaries on a Saturday late in the year.