Donald Trump did his now-infamous trashing of John McCain's military service at a rally staged by the the Family Leadership Summit in Ames, Iowa. According to Byron York, those remarks were the lesser of two things Trump said there that troubled the attendees.
York says the greater problem for Trump was that he failed to sound like a born-again Christian with a deep, personal relationship with God. That's what a lot of those voters came to hear. A large part of the G.O.P. base doesn't care a lot what a candidate would do in office. They care about him being properly religious their way, and presume that if he is, he'll do what's right.
That's yet another reason Trump will never be their nominee. Can you imagine him crediting all his success to anyone but himself? He'll probably try it in some manner but he sure won't convince anyone he means it.