Newt Gingrich began his first appearance in Tuesday's GOP presidential debate by attacking Democrats in Congress and making serious allegations against Federal Reserve Chairman Ben Bernanke.

"If you want to put people in jail, you ought to start with Barney Frank, Chris Dodd," Gingrich said, responding to a questioning about why Wall Street executives weren't arrested after the financial crisis.

Rep. Barney Frank (D-Mass.) and former Sen. Chris Dodd (D-Conn.) were the authors of the financial regulation bill dubbed Dodd-Frank.

"Bernanke has in secret spent hundreds of billions of dollars bailing out one group and not bailing out people in another group," he said of the Fed chairman.

Gingrich accused the media of failing to expose Bernanke and said it was "corrupt and it is wrong for one man to have that kind of secret power."

The former House speaker from Georgia, Gingrich is struggling to maintain momentum in the GOP primary. A Bloomberg/Washington Post poll concluded Oct. 9 put Gingrich at 3 percent.