Poor conclusion based on history. The Dems have NEVER tolerated a loser, and have chucked them under the bus every time. You get one chance. Johnson didn't even try to run, Humphrey lost and never got even close to a second chance, ditto McGovern, Mondale, Gore and Kerry.
Obama will end up just like Carter, not even his own party will take him seriously.
I left out Dukakis. We all know what a party leader he’s been since his defeat.