Good summary as to why Mitt Romney can win the Republican nomination.
"My guess is that Romney's views on the social issues are similar to my own: he's a social conservative, but doesn't have much appetite for red-meat politics on abortion and gay marriage, and places much higher priority on the economy and national defense. With hindsight, I think there was a better way for Romney to position himself: as a conservative and supremely knowledgeable expert on the economy, as George Bush's heir as a vigorous defender of the U.S. in the war against Islamic terrorism, and as a person who is himself a social conservative--just take one look at his family portrait--but who doesn't talk much about those issues except in the context of the constitutional philosophy which will guide his appointment of judges. I think if he had followed this route, he would have been truer to himself and more credible to voters."
Now that the economy is taking center stage, he is the only candidate with experience and the results to prove it.