Well that's true, but that will never happen. Iowans LOVE their little unique corrupt caucus and it's way outsized emphasis. They are arrogant about it. The only thing that would cause them to rise up would be someone trying to make it a normal primary
I was just looking at the caucus vs primary selection method in the states/territories
for the 2016 GOP selection.
Caucuses .. 18 includes 4 territories
Primaries .. 37 includes 1 territory
https://en.wikipedia.org/wiki/Republican_Party_presidential_primaries,_2016