Appearing on Fox News Sunday, Gingrich was asked about a report that his campaign had spent roughly $4.5 million more than it had raised.

“I think slightly less than that,” he replied, declining to offer a more specific number. “We owe much more than we wanted to. Florida got to be a real brawl. And I think, unfortunately, our guys tried to match Romney and it turned out we didn’t have anything like his capacity to raise money.”

Gingrich admitted that he had to dip into his personal finances to help fund his campaign though he insisted that he had not spent much of his own money. He also acknowledged that he was campaigning heavily in Delaware because it was relatively inexpensive to do so.

“We are operating on a shoestring,” he said.