If Pappy Paul runs third party and Rand endorses him, then the people of Kentucky should not only defeat Rand in the next election, but politely ask him to leave the state as to not bring complete shame on it. I hope Rand is smart enough to be actively telling dad not to even consider a third party run.
Trump is the only one to threaten to go third party. Gary Johnson is running on the libertarian ticket. Paul has no interest. Again, the voters of KY., would ignore Levin. So what is Levin going to threaten Trump with? Nothing, he’s powerless.