Do you read bradhicks's LJ? He's really good at looking at parts of issues that I, for one, wouldn't have thought of on my own. Agree or disagree with him, he's worth reading.
Anyway, in his most recent post, he points out a possible factor in why Tom Barrett lost (rather than why Scott Walker won) -- the gun vote.
You might want to read it. Agree or disagree, he brings out points that would not have occurred to me.