Gingrich suggests Fox News analysts don't know what they're talking about

Whether he intentionally meant it or not, new GOP presidential frontrunner Newt Gingrich may have let "the cat out of the bag" on Fox News pundits' knowledge of issues.

Speaking at a town hall event in South Carolina Tuesday evening, the former House Speaker shared an opinion about the network after getting stumped by a question on an HIV/AIDS vaccine.

“What you said is information that's new to me, I don't know enough about it to give you a direct answer," Gingrich told the audience member. "I'm certainly sympathetic to what you just said. But one of the real changes that comes when you start running for President – as opposed to being an analyst on Fox – is I have to actually know what I’m talking about."

Before his run for the presidency, Gingrich was listed as a contributor by Fox News Channel, regularly appearing on many of the network's shows. Because of potential conflict during his campaign run, Fox terminated Gingrich's contract this past May.

WATCH: Video from CNN.com, which was broadcast on November 29, 2011.