You’re right about the motives of the “audience” with respect to what draws them there. Trump will get a bump from it. However, I expect with what Cruz could and likely would do will bump his numbers up also. The losers will be the fence sitters and the establishment RINOs who try to pass off some sort of immigration reform/amnesty/pathway/higher-standard crap.
Let’s be honest. He would have to have a MASSIVE bump. He’s at anywhere from 4-8%. So he’s going to have to triple his numbers.