It's not the Occupy Wall Street protesters yelling "mic check" who are bugging Newt Gingrich at his events these days. 

It's the attack ads occupying the airwaves in Iowa. 

A new spot from the pro-Mitt Romney super political action committee Restore Our Future starts with the simple question: "Know what makes Barack Obama happy?" The answer: "Newt Gingrich's baggage." In the ad, luggage bearing the names of the former speaker's past liabilities then spills out onto an airline baggage carousel. 

"Newt has more baggage than the airlines," the ad says. The spot doesn't mention Gingrich's personal baggage. But it might as well. 

Gingrich has demanded that Romney call on the super PAC to pull its negative ads. "I object to lies. I object to negative smear campaigns," Gingrich said Tuesday. 

But Romney makes no apologies. "If you can't stand the relatively modest heat in the kitchen right now, wait until Obama's hell's kitchen shows up," Romney said in New Hampshire on Wednesday. 

Unfortunately for the former speaker, it's about to get hotter. The 2012 campaign is now a high stakes version of Pac-Man. In the battle of Romney versus Gingrich, guess who the ghost is? 

The Restore Our Future super PAC is not only run by former Romney political operatives. It also is funded in large part by big donors who still work at Romney's former investment firm, Bain Capital. 

None of this is a mystery to Gingrich. 

"We need to understand that these are his people, running his ads, doing his dirty work, while he pretends to be above it," Gingrich said Tuesday. 
Who does now?
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