It's very strange to me how Cruz and Kasich are so close to each other. Cruz would never have it in him to primary Trump, while Kasich has made several moves indicating a potential run.
Yes, I agree. Kasich challenging Trump in the primary is *possible*. But it's highly unlikely to happen with Cruz. Cruz does want to run for prez again though, so I suppose if Trump opts not to run for a second term, then we could see Cruz 2020, but what are the odds of that happening?
Trump is old, fat and sleep deprived. There is a good chance he dies before 2020.