At CNN's Wisconsin GOP town hall, Donald Trump says he won't promise to support the Republican nominee.
COOPER: Do you continue to pledge whoever the Republican nominee is?
TRUMP: No. I don't anymore.
COOPER: You don't?
TRUMP: No, we'll see who it is.
COOPER: You won't promise to support the Republican nominee?
TRUMP: He was essentially saying the same thing. Let me just tell you, he doesn't have to support me. I have tremendous support right now from the people. I'm way over two million votes more than him. I have many, many, more delegates than him. Like, many, many more delegates...
And I've been treated very unfairly.
COOPER: Unfairly by?
TRUMP: I'll give you an example.
TRUMP: I think by, basically, the RNC, the Republican party, the establishment.