Well yeah, but we saw the exact same thing with Obama as well 4 years ago though. I don't see much of a different in that regard. He was pretty far to the left and then he came right back to the center in time for the run-in and the debates. The only difference I see here is that he did it sooner then than Romney did now.
I think four years ago, Obama was able to beat Hillary because Hillary misread the base's revulsion for the Iraq War. I also think the Base looked at Hillary and said, "Do we really want another 4-8 years of the Clinton Circus?"
Of course, you always pander to the base during the primaries and move to the center for the general.
The problem Romney has is similar to the one McCain had... the Base doesn't really trust him.
So while Obama could move to the center with a wink and a nod to the base, McCain and Romney had to constantly reassure them he was one of them. Key point, throwing them a bone with the Veep Pick (Palin and Ryan).
Now, for the record, moderate or conservative, I'm against Romney because he's a douchebag with a weird religion. He could agree with me on every issue and I still wouldn't vote for him because I don't like him as a person.
I would have more respect for him if he were conservative and consistantly conservative.
But the Mormonism was always the deal-killer for me.