Chris Christie takes sole credit for keeping the Second Amendment alive in New Jersey
Governor Chris Christie of New Jersey speaking at the 2014 Conservative Political Action Conference (CPAC) in National Harbor, Maryland (Gage Skidmore/Flickr)

DOVER, N.H. -- Gov. Chris Christie's gradual pivot away from the gun control policies he had advocated as New Jersey governor took its sharpest turn yet Sunday evening on the campaign trail in New Hampshire. The governor and Republican presidential candidate, while fielding questions from a town hall meeting, took sole credit for keeping the Second…