NORTH CHARLESTON, S.C. (AP) — Just two days before the South Carolina primary, Rick Perry is dropping out of the race and endorsing Newt Gingrich. He says Gingrich "is not perfect," but adds, "who among us is?" He says Gingrich is a "conservative visionary" who is best suited to replace Barack Obama. Gingrich has been trying to unite conservatives around his candidacy in advance of Saturday's primary. He's urging Perry's supporters to take a look at his record.