If I recall correctly he did sign a loyalty oath. If he takes that loyalty oath as seriously as he did the ones he made to his first 2 wives, then, to quote one of his endorsers, “You betcha”.
Despite the Cruz dirty tricks in Iowa, I think that was his peak.
I'm not Trump's biggest fan but it seems to me a reasonable assumption that the "loyalty pledge" should go both ways. The GOPe trashing their front-runners is pretty appalling.
Ha also said ‘until death do us part’ to the fist two of three wives. See how that turned out?
He already had gone back and forth at least twice after signing the loyalty oath. Anyone who asks Trump to sign a loyalty oath is kind of dense, if you ask me.