Could be Gorebal warming, healthcare mandates, supporting DeDe when he didn’t have to support anyone.
Could also be serial cheating and flip flopping on issues. Although Myth doesn’t have this problem with the cheating, at least that we know about yet.
Take your pick. He and Mitt are similar at times. That is why they can’t take each other out.
I can see why Santorum was so pro-Romnney himself, it is reflected among his supporters.