I wouldn't like Michaud, but whatever.
I don't think it's that Pingree is "too liberal" for Maine, but it's just something about her that rubs people the wrong way. I'd be behind her daughter Hannah if she went for it, though.
There's been a lot of whining on DKE about how Michaud is "the right fit for his district, but not for the state as a whole" and how he's "putting his seat in jeopardy" if he runs. Never mind the fact that his district is only a couple points less Democratic than the state. I don't think Maine is the right state to run someone like Pingree, especially since she has the Tom Allen "Portland liberal" label hung around her neck.