The vice-presidential candidates, Senator Joe Biden and Alaska Governor Sarah Palin, square off in St. Louis tonight in their first debate. Palin has come under increased scrutiny this week following a series of interviews with Katie Couric of CBS News. In the latest interview, Palin was stumped when asked for a Supreme Court decision she disagrees with aside from Roe v. Wade. She also could not name a single newspaper or news source that she reads daily.