Herman Cain speaks as Mitt Romney listens during a GOP presidential debate at Dartmouth College.
Herman Cain speaks as Mitt Romney listens during a GOP presidential debate at Dartmouth College. AP Photo/Melina Mara
Herman Cain speaks as Mitt Romney listens during a GOP presidential debate at Dartmouth College. AP Photo/Melina Mara

New dynamics will roil GOP debate in Michigan

November 08, 2011 3:51 PM