It really has become a personality cult. I just did a quick search to see if this happened under Bush, McCain, or Romney's run and I can just find one similar case. David Catania, a gay Republican activist in 2004 made waves when he said he wouldn't support Bush.
However, he quit, he was not fired.
At that, the DC RNC Chairman offered to certify Catania's delegate status even though he didn't support Bush, citing he was free to support his conscience.
My how times have changed.
I was just reflecting on the year 2000 and the Dems "October Surprise" when it came out that George W. had gotten a DWI at the age of 19, and had been stopped for driving too slowly.
It practically cost him the election because it reflected poorly on his integrity.
Fast forward to 2016 when the "Republican" nominee is revealed to be a groper of multiple women, has bragged about serial adultery, has paid for the abortion/murder of his own children, has made multiple insane comments, and has lied serially, if not pathologically.
And there is a segment of the "Republican" hierarchy and populace who just doesn't give a rip....
No big deal. We're not electing a pastor, they say.
There is no integrity left in the national Republican party.
And because of that, it's doomed.