I'm not taking a chance that KBH could lose - I'm voting for her. If it makes you feel better, just vote straight republican. That way you can feel like you're just voting for the party and not an individual.
That is waht I usually do. Unfortunately, thanks to Tom DeLay's "I'm running/not running" stunt, I have to vote for each candidate individually so I can write in Shelley Sekula Gibbs.