This is conditional...
(1) If Florida runs the table, Tebow wins it. If they lose, he doesn't win it... If he didn't get their votes in 2008, I don't know what he'll do in 2009 to convince the Midwest voters he deserves it.
(2) If Florida loses a game, and Ole Miss manages to get by with two losses or fewer, I think Jevan Snead has a good chance... Good chance that Bradford and McCoy split votes, some avoid voting for Tebow, and the darkhorse QB of a top 10 team from the SEC has a chance...
(3) Otherwise, it should be Colt McCoy. Bradford will not likely improve upon his numbers and performance from last year. It will be tough to give it to a QB whose numbers and performance go down...
As silly as it sounds, Matt Barkley may end up being a legit candidate... He looks to have grabbed the starting job in the Spring from Aaron Corp, and whoever is the starting QB at USC has a chance. If USC runs the table, which is rarely done but always a possibility, then their QB will be considered.
I don't think there are any non-QB legit candidates. Jaquizz Rodgers and Jahvid Best are not winning the Heisman.