http://www.secretariat.com/fan-club/vox-populi-award/
Nominees are:
California Chrome
Shared Belief
Wise Dan
Untapable
Game On Dude
Ben's Cat
You can also write someone in which sorta happened the year Paynter won. Enough people got mad that he wasn't an option so he was added. It's basically shaking out as Chrome v. Dan from the comments I've seen.