John McCain’s campaign is supposed to announce a major endorsement shortly…

COLUMBIA, SC — U.S. Senator John McCain’s presidential campaign today announced that John McCain will receive a major endorsement in Greenville, South Carolina, , Wednesday, January 16th. GREENVILLE, SOUTH CAROLINA WHO: John McCain WHAT: Major Endorsement and Campaign Rally WHEN: Wednesday, January 16, 2008 at 11:00 a.m. EST Press Set Up Time: 10:15 a.m. EST WHERE: Carolina First Center 1 Exposition Drive Greenville, South Carolina 29607

Is it anti-pork warrior Tom Coburn? (UPDATE: Yes, it is.)

By the way, if South Carolina Governor Mark Sanford is going to weigh in, he’s only got a few days to do it… Word is he doesn’t intend to. But does he really not have a preference among the Big Five, and does he really not have any preference among Mike Huckabee, Fred Thompson, and John McCain, who all really could use a win in South Carolina?