Former Sen. John Edwards, Sen. Hillary Clinton, Sen. Barack Obama and Gov. Bill Richardson participate in the presidential debate in Charleston, S.C.
Former Sen. John Edwards, Sen. Hillary Clinton, Sen. Barack Obama and Gov. Bill Richardson participate in the presidential debate in Charleston, S.C. Gerry Melendez, MCT
Former Sen. John Edwards, Sen. Hillary Clinton, Sen. Barack Obama and Gov. Bill Richardson participate in the presidential debate in Charleston, S.C. Gerry Melendez, MCT

Voters challenge Democrats in debate

July 23, 2007 9:38 PM