Denying voters the right to vote is pure third world communism...and RNC-Establishmentarian.
Actually, it’s how a republic works.
The USA is a Republic, not a Democracy. It’s designed, by the founders, to prevent tyranny of mob rule.
The RNC is a private organization, with its own rules, just like any other political party. It can base its candidate on whatever approach it wants.
Unsurprisingly, the REPUBLICan party chose the Republic method of our founders.
But to the underlying point, nothing stopped Trump from leaving important states like New York and visiting us peons in fly over country to compete, just like Cruz did. He chose not to, apparently because Trump is convinced that we are nothing but dirt.
Trump’s contempt of the little people in the little states has bit him on the ass. New York values at the finest.