Why do signature campaigns not count posts in Politics and Society?

This is my first campaign and I am at a loss. I have spent hours and now days reading and its always  good information.  But trying to find a place to contribute something has been tough.  As a new member, I don't feel as though I am qualified to post anywhere else. And I already got one post deleted for saying congratulations and asking about the music in an add.

When you are at the very beginning it is even hard to know what to ask or how to contribute in any way

So am wondering why would there be no count on Politics and Society?  At least there I could contribute something.

And more importantly, how do you contribute quality posts in areas you know nothing about?