Collective amnesia regarding the past 15 years?
The only reasonable argument for Newt is that he's not Romney and not Obama and he used to vote conservative. But that is an unsound, defeatist argument to make even before voting starts in Iowa.
There are other candidates out there, and I've settled on Rick Santorum as the best of a weak field.
Then don't argue in favor of Gingrich. Argue in favor of some other candidate.
Lets just stop doing the democrats job for them, finally.