I think caucuses are basically hardcore Party members getting together and debating who they should vote for. If your candidate does not get 15% then your vote does not count and must vote for someone else and that is when the campaigning begins for the lesser candidates like Bush.
In the general election probably. I don’t know if it is Federal law I don’t think so, likely state laws depending on which state. But this is a party election scattered among 1,700+ R precincts. May not be true, and if someone complains, the hats fits in coat jacket pockets, and when ding dongs are not looking, pop it back on the head. :-)