Sorry, when I answered Ernst, I was only thinking of the new GOP senators. Out of all of them, I'd have to say Peters. He ran such a dirty, nasty, sexist campaign against Terri Lynn Land (a good woman) that I have no other choice.
I agree Peters isn't that great, but Land was not a good woman. She's a huge part of why Michigan didn't go GOP in the Senate this midterm.
She supports free and fair trade, as well as equal pay. I'd say she's a pretty good woman, but she was a horrible candidate. Because she was a mainstream conservative woman (and not a Tea Party loop like Palin, Bachmann, etc.), Democrats saw her as a threat, and so they threw the kitchen sink at her. They carpet-bombed us with false, sexist attack ads claiming she was waging a "war on women." Peters even got in on the act when he said that Land couldn't be trusted as a Senator because she was a mom.