For Mitt Romney, it's the best of times and the worst of times. While his New Hampshire win brings him closer to the Republican nomination, his campaign narrative against President Barack Obama may be unraveling.

His strategic line is simple: With a comatose economy and stubbornly high unemployment, Romney's private-sector experience makes him a better job creator than Obama. There are problems with that: Not only does the economy seem to be strengthening, but Romney's business background is being turned against him.

By Republicans, no less.