I'm not sure if this has been addressed before, but is there any way to add a poll to an existing thread? There had been a way, on vBulletin, but when editing an OP, I don't seen an option, unless you're adding it when you're originally making the thread.
Unfortunately there's not. Best way to do it is to create a new thread with the poll, and then a staff member can merge it for you. It's on my list of "mods to look for," though, as this is a pretty basic feature, hah.