Ted Cruz is an orthodox Conservative. Rand Paul is a Libertarian. I think both have deep seated personal animosity towards Trump that they are suppressing for their own electoral needs at the moment.
What does a party of them and President Trump look like.
Does Rand back a $1 Trillion infrastructure project? Does Cruz agree with the president on trade?
I feel like the three of them are three corners on a triangle. Starting a party with them would lead to, well, the current Republican coalition.
Cruz, Paul and Trump have far more in common with each other than they do with GOPe.