Gingrich staffer: Drop out, Newt.

[Lincoln Republican]

Yes, and the Gingrich staffer said Newt should drop out and they should put their allegiance behind:

DeLinda Ridings, who supported Jon Huntsman before becoming one of Gingrich's regional directors in South Carolina, told WIS-TV on Wednesday that it was time for the former Speaker to exit the campaign.

"[Gingrich] has tried really hard, but I think it's time to drop, and it's time to put our allegiance behind the man that I believe can beat Barack Obama, and that's Mitt Romney," Ridings told a reporter.

[Lincoln Republican]

Staying in is what's keeping Romney alive.

A facet of the Romney strategy

Attack Gingrich with negative ads to the extent that he becomes so embittered that nothing will compel him to withdraw from the race.

Although, at this point, I rather suspect it is too late to change the outcome of a Romney victory.