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Sen. John KerryJohn KerryTo address China's coal emissions, the US could use a little help from its friends Equilibrium/Sustainability — Presented by Southern Company — Storms a growing danger for East Coast Israel, Jordan, UAE sign pivotal deal to swap solar energy, desalinated water MORE (D-Mass.) stood in for Mitt Romney in Obama's debate preparation.

Moore was not pleased with debate moderator Jim Lehrer either, tweeting that he might have been coached by Clint Eastwood. Eastwood, addressing the Republican National Convention in late August, spoke to an empty chair on stage.

Political commentator and comedian Bill Maher, who has given a million dollars to the super-PAC supporting Obama, similarly blamed Lehrer for what he called a win for Romney.

At one point in his Twitter rant, Moore asked first lady Michelle to "give him the signal" and urged Obama not to pull his punches. He also asked if former President Clinton, who has become a mainstay on the campaign trail for Obama, could substitute for the president.

It's not the first time Moore has critiqued Obama: he also publicly weighed in against Obama's decisions on Libya, gun control and increasing the troops in Afghanistan back in 2009, among other things.