Ok, thanks for the feedback... a few more questions, though...
We could do this in one fo a few ways:
1) A forum just for polls. All registered users could post polls. Only registered users could vote. No approval or anything like that, just removal if they cause any trouble/aren't appropriate.
2) A forum like the one above, but all polls must be approved before they are posted.
3) A poll forum in which only admins and selected star/higher level members could post in. Based on the most popular topics, we'd post polls to this forum as often as the topics worth voting on came up, but if there were 5-10 'poll posters' then there probably would be plenty of topics come up. The forum would be read-only for regular users. The polls would work the same - only registered users could vote.
On the technical side, we can easily restrict users to voting only once, but only registered users can be tracked that simply. So if we were to open the voting to all visitors, registered or not, then the tracking might not be as reliable, like any regular poll.
Right now I’m leaning toward #3 with only registered users having the option to vote.