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    Rick Santorum says he's in for 2016

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Rick Santorum says he's in for 2016

John King, Nia-Malika Henderson and Peter Hamby discuss the return of the sweater-vested Pennsylvania Senator.

Rick Santorum says he's in for 2016

John King, Nia-Malika Henderson and Peter Hamby discuss the return of the sweater-vested Pennsylvania Senator.