I don't think it should be that difficult. There are plenty of people in P&S who post absolute nonsense, but at least manage to mostly stay on topic and can make a coherent post, even if the content of that post is moronic. And then there are people like BADecker and Tash who just post low quality and off topic trash which contributes absolutely nothing to any thread.
We delete off topic posts and posts which add nothing in other boards. Why not P&S?
I do agree somewhat, there's definitely a few cases of pretty straight forward off topic replies, or just genuinely low quality posts. Although, I do think you need someone in the P&S section that probably doesn't care all too much about politics, otherwise personal beliefs, and views can get in the way.
So, maybe looking at reporters list there, determining who has accurate reports, and then whether or not they've shown any particular strong views. Normally you probably want a moderator that's somewhat involved in that community/section, but I think P&S might be where that differs from the norm. I don't know the answer really, that's theymos' headache fortunately for us, but I do tend to agree that the section probably does need a little bit more scrutiny, which I do believe theymos knows hence him creating that thread a while back for
elections.
I don't see the reports there, but I can just imagine the amount when users are debating, and then trying to get the other person's post removed. So, you've got that pressure from the general forum users to clean up the section, and then you've got to sift through the bad reports, which I'd have a guess it's higher than the average section.