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1)Obama, Clinton spar on Reagan 1:34 Sen. Barack Obama and Sen. Hillary Clinton spar over Reagan at the South Carolina debate. 2)Viewers react to health care debate 1:37 Watch debate viewer reaction to John Edwards and Sen. Barack Obama as they discuss health care. 3)Voting record up for debate 1:52 Sen. Barack Obama and John Edwards get into a heated exchange about their past U.S. senate votes. 4)Clinton discusses Iraq policy 1:20 Democratic presidential candidate Sen. Hillary Clinton says she would have U.S. troops out of Iraq in a year. 5)Edwards, Obama debate Iraq 2:47 Sen. Barack Obama and John Edwards discuss their policies on the Iraq war. 6)Viewers react to John Edwards 0:42 Watch debate viewers react to John Edwards talking about fellow presidential candidates squabble on stage.