I also don't think those voters have even thought much about the consequences of the Dems picking up 15 seats passed the notion of it being a change from the way things are now.
I don't think that most voters look at the big picture. They're looking only at their own local races. As an example: Curt Weldon's race in PA. from what I'm reading he's trailing pretty badly. I think alot of those voters are thinking what the heck it might be time for a change not realizing that by losing that seat they help propel all of those hideous Dems. in to leadership spots.