Anyone who doesn't answer "all of them" at this point is a total hack.
The national environment in 2016 will be much more important in developing the race than the quality of the candidates, and it is extremely premature to rule any 2016 candidate out of consideration. In a 1932 or 2008-esque environment, Hillary could get stomped by any Republican.
Some of the Repupbicans mentioned are so unqualified and/or cooky that this seems unrealistic. A majority for Palin or Carson wont happen in any scenario.
No you're wrong.
To say that a candidate like Palin or Cain has an
absolute zero percent chance of winning in 2016 would be extremely cocky.