Ah, that's another more subjective issue. You're predicting Gingrich isn't going to gain in support. That might well be true, but he still has a theoretical chance to reinvent himself and prove his worth.
Here's a quote from Nate Silver:
Pat Buchanan and Al Sharpton. Think about that.
Undecideds are low, too. Gingrich is at 33%-47% fav/unfav. That makes him more unpopular now than Hillary Clinton was in 2007, albeit marginally--but his favorables are
much lower. Who does that leave in the TBD column?
The people who don't have an established opinion about Newt Gingrich are those who are too young to have formed an opinion of him in the 1990s, when he was a figure of national prominence. His opportunity to reintroduce himself is selective and based on new people entering the voter pool. Unfortunately, these are the voters who are least likely to be open to supporting a conservative Republican in 2012, and anything he's going to say or do (particularly harping on social issues and Islamo-fascism, as are his particular tactics) is going to keep them solidly in the Democratic camp. I'm sure Phil and Inks would be the first to say that they're outnumbered by their classmates when it comes to politics.
While all of this is subjective, I think I provide sufficient evidence to make the case that Gingrich does not have an opportunity to be a fresh face and increase his support among enough voters to make himself viable.
