Ted Cruz is a Senator, so I wouldn’t have to much faith in him. Why would he remain conservatives, when all the other alleged conservative elected to the Senate become left wingers.
Conservative lawyers like Scalia, Alito and Thomas are less likely to become RINOs.
The same can be said of whether Mike Lee would become a RINO.
Rubio has never had a real job.
Toomey could get primaried by any of 12 Congressman.