Yes, Trump endorsed Romney and donated to Romneys' campaign.
McRomney might as well go campaign for Hell-ery.
I recall Romney did not seem to be choked up when his vulture capitalist company would load companies up with debt prior to spinning them off with so much debt it was pretty much sure they would collapse the first economic down turn that came along. Never seemed to bother him, but Trump, a man that was loyal to him does bother him. I suppose if you are not a Mormon it doe not bother him.
Say what you will about the Trump, but when he went bankrupt he went down with the companies
Now as to demagoguery, Romney id not really fight Obama. After he thought he won the first debate he took a powder instead of going in for the kill. He lost against a demagogue. If Trump wins, I am willing to give me a wee bit of room in how he does it.
Romney and his attitude is going to help Trump, except for in Utah, where it will hurt him.
This word ... conservative ... is a state of mind, not a party