Debate day in Orangeburg The first in the nation Democratic Presidential debate will be held today in the Martin Luther King, Jr. auditorium on the campus of South Carolina State University in Orangeburg, SC. By CHARLENE SLAUGHTERT&D Special AssignmentsStanding, from left, Mike Gravel, Dennis Kucinich, Hillary Clinton, Barack Obama, Joe Biden, John Edwards, Chris Dodd and Bill Richardson.That is the order in which the candidates will stand during tonight's Democratic presidential debate.With an elaborate backdrop of the American flag behind them, in the richest red, white and blue imaginable, the first-in-the nation presidential debate seemed more real than ever as...