Elections are not won by convincing the majority of Americans. They are won by motivating enough voters to vote for you, or by getting enough vote-counters to cheat for you. IIRC, Bill Clinton won in 1992 by getting 18% of registered voters motivated enough to vote for him. If all of the people who show up, or would show up, at Trump rallies actually vote for him in November, he would be a shoo-in.
FD: I’m a Cruz man.
What do you think those folks are going to do, just forget to show up?