He's not a hard core conservative by any means, but the man can speak. He's funny and charismatic, and can really connect with people. President Bush is a great man, but the guy can't deliver a speech to save his life. Half the time I'm cringing when he trips over words, and find myself wishing I could run up on stage and finish it for him. Rudy's a real leader, and he's far less liberal than whoever the Dems will put up against him.
Secretary of State Condoleezza Rice
The real 'nuclear option'. Again, she's more liberal than many would like, but she's brilliant, a decent speaker, and a person of character. That, and the little fact that she'd beat any Democrat, anywhere, by a good 10 points, and shatter the core myth of the Democratic party. The 'secondary effects' of her candidacy can't be overstated. I think she's more than worth the risk.
Senator John McCain
My hat's off to him for his service, and Lord knows he suffered for the flag like few others. He's deeply respected and quite popular with many people that normally wouldn't consider voting Republican. Still, the man is damaged goods. He's one of the few public figures that I genuinely think is not mentally sound enough to be President. (Most are merely morally unsound, which admittedly appears very similar).
Many others suffered unto death.
At least, McCain eventually returned home to a full life and career.