Do the Republicans have principles?
Yes, they do, The real ones do.
The best gauge of a real Republican is in how much they like and follow the Republican party platform.
The GOP platform, unlike the democrat one, is the opinion of the grassroots. If you take the time to read it you will see it is the people upholding the Constitution.
The Country-Clubbing Never Trumpers dismiss the platform every chance they get.
I remember when Bob Dole was asked, just after he had been nominated at the convention in 1996, if he was going to read the platform and he said, "Who reads a platform?"
Any wonder why the grassroots were none too happy and did NOT come out in droves to vote for him?