Newt Gingrich may be at a debate, but that doesn’t mean he can’t multitask. He kept at least one vow, and released his tax return for 2010 during the debate. Gingrich paid federal taxes of $994,708 on an adjusted gross income of $3,142,066. On Wednesday, Gingrich said he paid an effective tax rate of 31 percent in 2010. Mitt Romney admitted earlier this week that he pays “closer to the 15 percent rate.” Newt also said that if he were to debate Obama, it would be a battle between knowledge and a teleprompter. Romney, despite boos, said he'll release his tax returns all at once if he's the nominee. Ron Paul's too embarassed to show his numbers next to Mitt and Newt. Santorum's taxes, by the way, are on his computer at home. Right.