Edwards says he doesn't.
A quote - "I don't believe I have to... I believe I have a great chance of winning some places on Tuesday, but I'm not drawing that line."
-- Sen. John Edwards, quoted in the New York Daily News, on whether he needs to win any of the Super Tuesday primaries. via Political Wire. http://politicalwire.com/
I disagree with Sen. Edwards. I believe he needs to win Georgia and at least 2 other states to not go from the "future" to a bit ridiculous.
Of course, I also believe he has no chance of winning the nomination.