"Be assured, my decision was not in any way influenced by any concerns about my being re-elected to Congress," Bachmann said. "And rest assured, this decision was not impacted in any way by the recent inquiries into the activities of my former presidential campaign or my former presidential staff."
Whether one is assured by her assurances -- given that she doesn't explain any other reason -- is up to the individual.
My feeling, based on nothing but the above, is that she might not be concerned about losing in 2014, but she knows that it will be a tough race, made tougher by inquiries into her staff, and if she does happen to lose, it drastically lowers her profile in the country, especially for raising money. Now, however, she leaves office as a sitting member of Congress.
Who knows? The operative point is that Michele Bachmann will not be running for re-election, and so she will be able to spread her own special brand of crazy on her own. With a lessening voice and no Congressional authority. She'll still raise a lot of money, because P.T. Barnum was right, and there will always be suckers who want to give her money to Save America.
But perhaps now Ms. Bachmann and Sarah Palin can tour in a doubles act. Sort of like Roxie Hart and Thelma Kelly do at the end of the musical, Chicago...