Everything except having glitter (which I mistakenly described as a box of Lucky Charms) poured over his head during a book signing the other day has been an unforced error by Newt and his campaign.
He needs to finish out the schedule in Iowa, then come back to Washington or Georgia or wherever the campaign is headquartered and take a week to examine what went wrong and what they can do to avoid those mistakes again.
Can he recover? Of course he can. One of Newt's strongest points has been his ability to ride out a rough patch and emerge to drive down the highway at full speed.
The bigger question is: After not running for public office since 1998, has he lost a step so that his full speed isn't fast enough anymore?
It may well be that Newt Gingrich is like the NFL quarterback or Major League pitcher who comes out of retirement but finds, not a return to the glory days, but that the game has passed him by.