Romney counters Democrats' 'Mitt versus Mitt' ad with Obama's criticism of his own presidency

Democrats are using humor to try to undermine Republican Mitt Romney, pushing a movie trailer-style ad that portrays his candidacy as a "the story of two men trapped in one body."

The new ad released Monday is part of an aggressive effort by Democrats to portray Romney as being inconsistent on a number of issues important to conservative voters as he seeks to challenge President Barack Obama next year. Democrats are trying to slow the former Massachusetts governor's progress with six weeks remaining before Republican primary voters begin picking their nominee.

The Democratic National Committee ad, called "Mitt versus Mitt," argues that Romney has changed his views on health care and abortion rights, showing contradictory clips of Romney on the issues. "From the creator of `I'm running for office for Pete's sake,' comes the story of two men trapped in one body," the ad says.

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