You have to reach member's status before you can post on the political forums..and member's status is around 100 posts. It's a way for the admin. to weed out spammers and trolls a little better.
Thanks, I figured that out right about the time you responded. The problem is that the message that I get when I tried to post to the forum in question did not mention that it was closed to <100 post guests. I dug around for awhile, and found it in the FAQ. Good thing, too, I almost left the site in frustration.