Washington (CNN) - Mitt Romney has gotten a major boost on the airwaves in Florida as he battles Newt Gingrich in advance of next Tuesday's primary.
The pro-Romney super PAC Restore Our Future on Monday purchased $4.5 million in ad time in the state for commercials that will run through Jan. 31st, the date of the Florida primary, a source familiar with the purchase told CNN.
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Because of its size and 10 media markets, ads are expected to play a major role in helping to determine the outcome of the primary.
Restore Our Future is already airing a commercial that blasts Gingrich for his attacks on Romney's former company Bain Capital and says the former House speaker "has more baggage than the airlines." The ad recounts his ethics problems while serving in the House of Representatives and his Freddie Mac consulting contract. Right now the PAC has no new ads in its rotation.
Restore Our Future has already spent $3.2 million in the state, according to CNN's advertising consultant, Kantar CMAG.
Romney and any super PACS supporting him are not allowed by law to coordinate activities.
Through Sunday Romney's campaign had spent almost $3.2 million in advertising, and it announced new commercials on Monday.
Gingrich's campaign went up its first ad in Florida Tuesday, and the super PAC supporting him has said it will start its own media campaign soon.
– You can follow Kevin Bohn on Twitter @KevinBohnCNN.