So I created the poll to allow voters to change their votes. However no one is seeing the option. Turns out this is a bug, fixable with 2 simple edits in the code.
SMF said they'd fix it in 2.1, I don't know if this forum is running a 2.0.x or if they just didn't fix it.
http://www.simplemachines.org/community/index.php?topic=488224.0