Also, my point is that Bachman can win a district election, but I do not believe she could be elected as a senator. She would need statewide support.
I don't think she'd win a statewide election (most years) either. Minnesota had the distinction a few years ago of having our two senators elected two years apart representing the far ends of the political spectrum. We had Rod Grams who may not have been the MOST conservative Senator, but probably wasn't far from it, and Wellstone. Each election is different. Just because the mood of the country in 2008 was to swing toward democrats, doesn't mean its inevitably going to keep going that direction.
Believing that a short term move in one direction means it will move that direction forever is the equivalent of buying into the global warming arguments. Its no more logical than tracking the changes in temperatures and the number of hours of sunlight in October and reaching the conclusion that we're eventually going to have daytime temperatures of minus 100 degrees and 24 hours of darkness every day.