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Former Speaker of the House Newt Gingrich speaks and former Massachusetts Governor Mitt Romney listens at the CNN GOP Debate at Saint Anselm College in Manchester, New Hampshire on Monday, June 13, 2011.
Former Speaker of the House Newt Gingrich speaks and former Massachusetts Governor Mitt Romney listens at the CNN GOP Debate at Saint Anselm College in Manchester, New Hampshire on Monday, June 13, 2011.

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    Romney, Gingrich zero in on each other

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Romney, Gingrich zero in on each other

The political back and forth between Mitt Romney and Newt Gingrich is heating up, as CNN's Jim Acosta reports.

Romney, Gingrich zero in on each other

The political back and forth between Mitt Romney and Newt Gingrich is heating up, as CNN's Jim Acosta reports.