Yes.
The platform is white supremacy.
Everything else is a combination of willful acceptance, flimsy code-words, and a few who are tricked by concepts like "fiscal conservatism" and take them at face value.
It's why Donald Trump can say, on the surface, completely contradictory things. His base knows what he's REALLY saying and that is pretty consistent.
Surprised no one's linked Lee Atwater yet.
https://www.youtube.com/watch?v=X_8E3ENrKrQ
Evangelicals also largely believe in white supremacy as a religion. It's why they claimed a non-Christian like Mitt Romney or a historically irreligious man like Donald Trump were more "Christian" than Barack Obama and Hillary Clinton.