I wonder if there is a plugin or hack to make a kind of poll or e-voting possible on my wordpress site.
I've got multiple of subscribers that are able to login and change their profile.
What I wanna do now is create a post with a voting functionality where each subscriber can only vote ONCE. this would be the most important feature that each subscriber can only vote once and you have to be subscribed in order to vote.
Any ideas how to do that or if there is a plugin out there with this functionality?
thank you in advance.