unfortunately, no. Once you click that little button, that's that. Atleast, with the current version of FuseTalk. Maybe in later versions you'll be able to.
You'll have to post a new topic with a real poll. One thing is, when you're putting answers in, you have to click on the "add" button and not just push the <enter> key. Your answers won't be entered. I think the default focus is on a cancel key or something.