HA, I was thinking the same thing. I know of not one actual Republican that supports Romney. None. Nada. Zilch. I can only guess that those who support him are voters that dutifully vote Republican for whatever reason but don't follow politics all that closely. His name is in the news all the time, so around 15-20% simply recognize the name Mitt Romney and tell pollsters they like him. Not saying he can't compete in the primaries as I am sure he will raise big money, but I really doubt he will generate much enthusiasm. If he wins the nomination, it will only be because the actual conservative base and Tea Party folks split their votes between too many candidates.
I don’t know a single Romney supporter either.