Dayton is toast. Even the lefties here in Minnesota (the state where nothing is allowed) were dismayed with his 'chicken run.'
The only reason he squeezed in was lucky timing of Rod Grams worthless son being caught diddling a 15 year old girl in some seedy hotel just before the 2000 election.
Even Minnesota liberals like their candidates to be intelligent. I wouldn't surprised to see them to ask Dayton to step aside. If he refuses, however, I don't think they can force him out given his ample family fortune.