Newt has my vote!
the powerful newt? lol..ya ok
It doesn't seem to be quite so simple.
The Democrats don't think Romney is easily beatable. Most of their earlier obvious ("signed") effort was directed at Romney. The official YouTube videos, etc.
Since then, there seems to have been a realization on some level that the Democrats don't lose if Romney is elected. Romney seems to be more or less ok with Democrats at the moment, and as a result, the Democrats seem to have backed down a bit from the Romney hate and have set about getting rid of everyone else. Good for Romney, bad for Conservatives. What else is new?
If Obama wins, Democrats get a liberal. If Romney wins, they get a liberal. Obama is probably the easier to control of the two, which is why they'd more-or-less prefer Obama. But if Obama's number keep tanking, I think Democrats know that they will do fine with Romney.
It's a mess.