CNN) – Republican Gov. Chris Christie of New Jersey will endorse Republican presidential candidate Mitt Romney at a Tuesday afternoon event in New Hampshire, two sources close to the governor told CNN Chief National Correspondent John King. Christie passed on his own run for the White House last week and suggested he might endorse a candidate in the 2012 race. CNN) – Republican Gov. Chris Christie of New Jersey will endorse Republican presidential candidate Mitt Romney at a Tuesday afternoon event in New Hampshire, two sources close to the governor told CNN Chief National Correspondent John King.Christie passed on his own run for the White House last week and suggested he might endorse a candidate in the 2012 race.