The debate at Washington University in St. Louis , Missouri , will start at 9 p.m . ET and be moderated by PBS 's Gwen Ifill . Sarah Palin , Joe Biden to face off in their only debate the end of the day night . Stakes high for Biden , who is said to be eager to prove herself . Biden is political veteran who must avoid embarrassing gaffes .
Sarah Palin , Joe Biden to face off in their only debate the end of the day night . Stakes high for Biden , who is said to be eager to prove herself . Biden is political veteran who must avoid embarrassing gaffes .