It seems likely that they won't know until 2009. Whoever is finally declared the winner will have to live under a cloud of suspicion that the seat should have gone to the other guy. If Franken wins, will he say, "I'm good enough, I'm smart enough, and doggone it, people like me... I think?"
The 2008 Minnesota race for the U.S. Senate is almost like a carpet sale. Instead of Install in your home now, and you won't pay a dime until 2009!, it's Vote for Senator now, and you won't know until 2009!