Trump has financially supported democrats for decades. He's always been one of their biggest supporters and biggest fans. Because of that, the left has all the dirt on Trump they need. All they have to do is bring out his own words in support of Hillary and the far left wing agenda - so Conservatives will just stay home. They'll want nothing to do with him. Trump will be lucky to get 10 votes by the time the democrats expose the real NYC far left wing progressive Donald Trump.
AND, the left can even be really nice about it and praise him for his life long support of progressivism. They can even play recordings and show videos of how much Trump agrees with everything they've ever done. Trump will be made into a far left wing hero who ushered in the end of the Republic. Hillary may even choose him as her VP!
No doubt, but to suggest there isn’t ‘stuff’ that will surface regarding Cruz, is naive. It will be a free for all by the time November rolls around.