(CNN) - Viewers watching the South Carolina debate Monday night had the unique opportunity to weigh in on the Democratic candidates as they discussed the issues. The red line graph over the debate footage indicates the voter response.
People meter: Watch Edwards fight for his chance in the debate.
People meter: Watch the candidates spar over health care.
People meter: Watch Clinton and Obama argue on their economic standpoints.
Related: Watch CNN's Erica Hill report on the real time viewer reaction
–CNN’s Emily Sherman