Newt has an enormous ego, I wouldn't bet that he realizes he's unelectable.
He is vain but not stupid. If enough people hit him between the eyes with a two-by-four he will get the message.
I would vote for him.
He is the most convervative.
He is the most experienced.
He understands history and what it means.
He would destroy ANY Dem in debates.
He is a good public speaker, no more marbles.
And the Dems absolutely HATE him because they know he is deadly to their cause.