Straight.
Nearly 37% so far are gay or bisexual? Far more than I expected.
Previous polls have yielded a similar number on this forum.
I wonder whether that suggests that the internet is disproportionally gay, or those interested in politics, or both.
It's definitely not the internet. But I wouldn't normally expect politics to have this sort of skew, either. DailyKos, for example, does regular censuses of its membership and generally comes up about 8-10% gay, which, given that the vast majority of gays involved in politics are more inclined to DailyKos than its Republican equivalents, is probably representative of the population as a whole.
It may be that we sort of reached, randomly, a "critical mass" at some point of being a gay-friendly political forum and therefore retain new gay posters at a much higher rate than new straight posters. That's my best guess.