Colbert ad pokes fun at super PACs, Romney

Stephen Colbert: New attack ad targeting Romney
Comedian Stephen Colbert poses for photos to celebrate the launch of his new Ben & Jerry's ice cream AmeriCone Dream at the Dream Hotel on March 05, 2007 in New York City.
Getty Images/Scott Wintrow

MYRTLE BEACH, S.C. - A super PAC supporting comedian Stephen Colbert's "presidential campaign" is taking to the airwaves in South Carolina, poking fun at both super PACs in general and frontrunner Mitt Romney in the process.

"If Mitt Romney really believes 'Corporations are people, my friend,' then Mitt Romney is a serial killer. He's Mitt the Ripper," the televised ad says, punctuated by a woman's scream.

What's striking about the ad, put out by Colbert's "Americans for a Better Tomorrow, Tomorrow" super PAC, is how it resembles real super PAC ads -- the ones that have been flooding the airwaves that attack Romney on the one hand and, especially, Newt Gingrich on the other, reports Dean Reynolds.

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Gingrich and Romney have insisted they have no control over these nominally unaffiliated groups, and they say the ads should be removed if they're inaccurate.

In his own way, Colbert says the same thing, kiddingly asking on his "Colbert Report": "Is Mitt Romney a serial killer? I don't know. But the question is out there now."

Colbert may have an obstacle to his write-in campaign here -- like the fact that South Carolina doesn't recognize write-in campaigns. But so what?

Colbert insists his effort is less than a campaign and more like an expedition without a destination.

"You know, I'm exploring right now. I'm a one-man Lewis and Clark. And I'm just looking for my Sacagawea," he said Sunday on ABC's "This Week."

Colbert has a brand new ad out, jokingly urging voters to opt for Herman Cain -- who's suspended his campaign.

Watch Reynolds' full report above.