GOP presidential campaigns are closing out the year with several major shake-ups. Correspondent Dianne Gallagher reported from Washington: Dr. Ben Carson is saying goodbye to more than 2015. His campaign manager and communications director abruptly resigned on Thursday. Despite lagging poll numbers, the Carson campaign announced it raised at least $23-million in the fourth quarter alone. The Ted Cruz campaign announced the Iowa leader took in $20-million in the last quarter. Jeb Bush also did a little reorganizing of his own, with his Super PAC is pulling back TV ad money as the campaign puts more of a focus on the ground game.
