I run a music site, and my politics forums are VERY busy. Every moderator on my site is a Super Moderator, there's just no point (to me) in assigning people to different forums, and it's a lot easier to keep the forums clean when any mod on at any given time can take care of business.

That said, my mod team is pretty vigilant in the politics forum, and believe it or not, it's almost never a problem and I've never had to actually ban/temp-ban anyone because of political differences. There are some great discussions going on right now and since my memberbase is only about 50% American, it's made for some good conversations/debates.