I don't see voters changing their life long core values because of a little blip here or a little blip there. A conservative wouldn't vote for a high tax, failing school, pro-homo, pro-abort, fascist health care liberal just because Bush mispronounced a word.
Voters will vote like they always have. The election will depend on which party gets out the voters, and I see the democrats acting like blithering, hate filled idiots. My guess is the conservatives and traditional Americans will come out to vote just so the whining, bitchy democrats don't get any more seats. Lord knows they've got too many already.
Yes, turn-out has not been mentioned much if any in this election cycle. A typical mid-term election only draws 37 to 40% of the electorate nationally. That's about 20% less than a presidential election year.