There's selection bias and then there's a near 50-50 ratio. Yikes.
Well, when I saw the thread title, I assumed the thread would contain questions for LGBT posters, not a question for all posters asking whether they are LGBT or not. So I suspect many non-LGBT posters didn't even click.
I believe other polls have shown a near 50% LGBT ratio though. I would have expected a place like this to be at least 90% male, so that part of forum demographics never surprised me - but the gay thing is difficult to understand. Why would LGBTs be more interested in electoral maps than straights? 
The fact that our civil rights are currently a political issue and hot topic would make me expect LGBT people to be more politically oriented overall, though certainly not by the margin shown in this poll. I guess there's also the fact that people tend to me more honest about their orientation online when behind the veil of anonymity.
Poll
