Speakingthrough Corruption, yes, the can vote. They cannot actually be a part of a political party though. Just the people at the top, bribing those votes can. There's a big difference between the two.
I'm just gonna go out on a limb here and say that those of yo arguing this policy have either had one of your threads, or one you were posting on locked.(If not more than one).
These forums are here to be a friendly place for gamers to get together and share tips/strategys, or whatever else. For the most part, I believe the off-topic section was put in to cover all the stuff that didn't have a category. Yeah, i's being abused as it is, bout most of what goes there isn't malicious in nature(At least when it starts...)
What it comes down to as far as I've seen, if you play nicely, there isn't a topic that gets locked. I highly doubt a moderator or whoever would lock a thread just because they don't like it. Kinda suspicious, and most likely if this did happen, chances are it could be undone with the proper methods. (Flaming not one of those methods, hint.) Don't blame the whole mod staff because you think a few are forcing their own agenda on us.
Besides that, every thread that gets lock here can go up on the JU forums with almost no interference whatsoever. (Unless, I think, If it goes into the harrassment stage of things, but those kinds of topics don't belong anywhere.) If they were forcing their beliefs/agendas/whatever, JU wouldn't even exist, they'd just not tolerate the existence of those topics on their servers period.