Either late February or early March.
How is he going to emerge as the presumptive nominee after only four contests, one of which he has already lost???
I think he has this locked up, but that's just ridiculous.
I honestly don't understand how you can think he has it "locked up" after 1 contest in which he came in 3rd. Sure there is a plausible argument for why he'll win or "emerge", but there are such plausible for several other candidates, including Trump, Cruz, or even Kasich.
Also, if he has it locked up, then there's no need for him to "emerge", unless you're just seeing something the rest of us aren't.