Republican presidential hopeful Newt Gingrich speaks at a Space Coast town hall January 25, 2012 at a hotel in Cocoa, Florida. (Stan Honda/AFP/Getty)
By Catalina Camia, USA Today -- Newt Gingrich heads today to North Carolina, a day after admitting he has chipped in some of his own money to help his debt-ridden campaign.
Gingrich said Sunday on Fox News that his presidential campaign is about $4.5 million in the red. He conceded he's put in "a little bit" of his own money into the campaign "but not dramatically."
"But we owe much more than we wanted to," he said, later admitting he has "no regrets" running for the White House.
The North Carolina primary is on May 8.
Gingrich has not won a primary since taking his former home state of Georgia on Super Tuesday last month. He has been sagging in public opinion polls, as GOP front-runner Mitt Romney has widened his lead in convention delegates needed for the nomination.
Gingrich has declined to drop out of the race and, instead, has chosen to retool his campaign to focus more on social media and reaching delegates one-on-one. He conceded that Romney is on his way to the GOP nomination.
"I think you have to be realistic, given the size of his organization, given the number of primaries he's won. He is far and away, the most likely Republican nominee," the former House speaker said Sunday on Fox News. "And if he does get to 1,144 delegates, I'll support him."