New York columnist John Heilemann joined the Morning Joe crew today to discuss Michele Bachmann’s very “palatable” first Iowa-centric ad for her presidential run. “She is demonstrating day after day that she can be more mainstream, in terms of her presentation,” Heilemann said. This might be the first recorded use of Bachmann and mainstream in the same sentence. Bachmann didn’t name-drop any famous murderers from Iowa this time, so maybe this is a shift to the middle?