Wayne, I think you might want to edit your post to add some more Tolkien based reasoning, or your vote most likely won't count at the end of the day. And believe me, there's nothing sadder that not counting fer nuthin' at the end of the day.
I said I would vote for Sauron and I'm a gonna:
+ + Sauron
First of all, he's a bad guy. Do we honestly need more reason than that? Kill the bad guys, kill the bad guys!
Secondly, as there as there are only two bad guys left, let's compare them.
The Witch-King -- strikes fear in the hearts of grown men and maketh them soileth themselves.
Sauron -- Gives pretty gifts and whispers anti-Valiar rubbish into people's ears, but otherwise leaves everything cool and scary to his lackeys. Oh get off your bum, you lousy pathetic excuse for a Dark Lord!
Should someone who was bested by a trio of halflings really win Survivor? I think not. Should someone who fell for the age old trick of tapping the opposite shoulder (i.e. Aragon and co. at the Black Gate) really win Survivor? Please. Made ya look!