Washington (CNN) - Democratic Leader Nancy Pelosi Thursday dismissed the idea she knows something secret about former House Speaker Newt Gingrich that would disqualify him from being president, saying it's just her "instinct" - based on the public record.
Pelosi ruled out Gingrich's chances of becoming the GOP nominee Tuesday when she told CNN Chief National Correspondent John King, "He's not going to be President of the United States. That's not going to happen."
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"There's something that I know. The Republicans, if they choose to nominate him, that's their prerogative," she continued. "I don't think that's going to happen."
Gingrich, when asked about the comment Wednesday jumped at the opening to use a leading liberal as a foil and called on Pelosi to "spit it out" if she knows something about him.
Questioned about the hubbub during a news conference at the Democratic Caucus Issues Conference in Cambridge, Maryland, Pelosi steered clear of any indication she knew something the public didn't as a result of participating in an ethics investigation of Gingrich when he was speaker.
"I've said over and over again as far as speaker Gingrich is concerned I refer you to the public record," Pelosi insisted.
The minority leader said the interview on CNN was misconstrued.
"On a separate subject I was saying I know he'll never be president and they sort of combined the two things. Why do I know he'll never be president? Just an instinct I have. So it's all about the public record."
But pressed on any exact contents of the record that could be incriminating, Pelosi told CNN, the public would "just have to go through the record."
"I'm not here to give a roadmap to the public record," she said.
Pelosi was a member of the committee that investigated Gingrich's ethics charges, which resulted in a $300,000 fine for improperly using a college course he was teaching to push his partisan goals. The ethics committee declared the former speaker "reckless" and the House reprimanded him.
Last month Pelosi first raised questions about Gingrich, saying in an interview that she "knew a lot about him" because she was one of four people "locked in the room in an undisclosed location for a year" and that she had gone though "a thousand pages of his stuff."