Donald Trump could win 1237 but Ted Cruz could try to use his anti Trump delegates to take over the convention, change the rules and make it possible that "bound" delegates are a thing of the past meaning the Texan's mastery of delegate picking could reverse the primaries.
Wow, that would make Cleveland interesting. Doesn't seem headed that way as party insiders are slowly warming to Donald Trump. If you like intrigue, stay tuned.
GOP’s Stop-Trump fever breaks - POLITICO