Bachmann: I'll bring back $2 gas

NEW YORK (CNNMoney) -- President Michele Bachmann has a promise: $2 gas.

"Under President Bachmann you will see gasoline come down below $2 a gallon again," Bachmann told a crowd Tuesday in South Carolina. "That will happen."

Sure, politicians promise all kinds of things on the campaign trail. But Bachmann, a leading contender for the 2012 Republican nomination, is wading into truly tricky territory.