I think that they are, for all practical purposes, completely indistinguishable. In fact, socially, Romney is perhaps a bit more conservative than Trump considering Romney isn't on his third wife.
Trump is popular because of the birther issue. That's it. And, I think it goes to show what a vacuous issue it is as a great number of its adherents can be so easily and QUICKLY fooled by someone who preaches the same.
Trump would be the LEAST conservative candidate in the field, and yet he's leading all comers. Why is that?
I think we can look to Mr. PT Barnum for our answer, sadly.
He is more conservative than Romney.
Exactly right.