I believe that the Jeb Bush camp are waiting for a return to moderation in 2016 weeding out the crazies now the groom him in 4 years as a more ''level'' headed guy weather you like him or not
The problem is none of these upcoming "leaders" of the GOP are actual moderates. Mitt Romney is the closest thing to a moderate leader that the GOP has, with very few potential moderate candidates being groomed since they've been largely pushed out of the party by the strong turn to the right in the past decade.