Republican presidential candidates Rep. Ron Paul, R-Texas, and former House Speaker Newt Gingrich laugh at a presidential debate at Dartmouth College in Hanover, N.H., Tuesday, Oct. 11, 2011. (AP Photo/Scott Eells, Pool)
Republican presidential candidates Rep. Ron Paul, R-Texas, and former House Speaker Newt Gingrich laugh at a presidential debate at Dartmouth College in Hanover, N.H., Tuesday, Oct. 11, 2011. (AP Photo/Scott Eells, Pool)