The poll is in the comments of this market: 

Anyone is welcome to vote, no matter how much you know about the topic in question.

This market resolves a day before the vote itself closes because i don't want people to have an incentive to not vote at all in order to manipulate this market. So feel free to withhold your vote until after this market resolves, but after that please do vote according to your true belief.

I may not be online at the exact time this market closes, so I'd appreciate someone else recording the vote count at the time. (I'll resolve this market based on the best estimate available to me.)

(I can't like my own comments, but my vote does count, so remember to add 1 to whatever number you see over there.)