Somebody explain to me (in detail) how Ted Cruz gets the Republican nomination. I read that he needs something like 90% of the remaining delegates in order to win the nomination on the first ballot. There are vanishingly few possible worlds in which that happens. If nobody has the requisite number of delegates at the convention, Cruz will be the 89th person on the establishment list (if that). So please explain why he's still in the race. I understand why the establishment wants him to stay in the race (to deny Donald Trump the delegates he needs and thereby throw the convention open for the likes of Jeb Bush, Marco Rubio, or Paul Ryan), but I don't understand why Cruz stays in. Unless he wants an establishment candidate as the nominee, and I don't think he does, he needs to drop out immediately and get behind Donald, because at this point it's either Donald or someone chosen by the Republican power brokers.
Addendum: It's 80%, not 90%. See here. Trump has a big lead in the polls in California, Maryland, New York, and Pennsylvania. See here. Cruz needs to get out. Now.
