Easily Giuliani. A power mad fascist with a disturbing creepiness factor. Claims he would be conservative but his record is more liberal than Hillary's. No one has capitalized more off 9/11 and for doing what exactly? Any moderately competent local politician would have done and said exactly the same thing.
McCain is second. Gutted First Amendment with campaign reform law, sucked up to mainstream media shamelessly, against tax cuts, for open borders and amnesty, then gets mad when republicans criticize him. Has some good ideas but basically a belligerent prick.
Thompson is getting dangerously close to repulsive territory. The whole young wife/young children thing is a bit creepy for 64 year old guy. It would be one thing if he played it as a hollywood celebrity, but he wants to have it both ways and pretend he's soccer dad.
This a lot of fun. Too bad there are only two parties to attack.