Maryland Gov. Martin O'Malley.

O’Malley, who has become a frequent surrogate for President Obama, played a similar role at the first presidential debate in Denver and last week’s vice president debate in Danville, Ky.

During a series of media interviews Tuesday, O’Malley didn’t have much kind to say about Mitt Romney, the former Massachusetts governor and GOP nominee.

“As he often does, he pumped out some things that were falsehoods,” O’Malley said during one appearance on MSNBC.

He also knocked Romney for his pledge to crack down on unfair trade practices from China.

“Governor Romney cries crocodile tears outside of factories that have closed, and yet he made so much money offshoring American jobs to China and to other countries,” O’Malley said. “So, I think the president needed to hit him square in the nose in that one.”

Tuesday night’s more spirited performance by Obama no doubt made O’Malley’s task easier than at the first debate. Following that event, where Obama’s lackluster showing was roundly criticized, O’Malley said the president showed “a dignified reserve.”

The comment earned O’Malley a spot the following night on a segment on “The Daily Show” with Jon Stewart.