Well, he is certainly not ugly. In my opinion, Obama is defenitely a strong contender for this title (btw, Biden would also be). Both Roosevelts were also handsome. JFK is a little overrated I think, I would prefer RFK. Out of the losing candidates, along with Romney, Willkie, Dewey and Gore were also good looking dudes. My wive thinks that W was also a good looking man back in 2000.
I agree with Mitt Romney, Gore (back in the day), and maybe Willkie, but not Dewey. Dewey was one of the most ugliest presidential candidates ever IMO (especially with the mustache).