When I hear the word "politics" I think of strategies to acquire power to affect changes in the law, but the scope of this site seems to be much broader. All questions regarding the mechanics of governance seem on topic. Why not call this site "Government and Politics"?
Edit: I don't think it's necessary to change the URL -- only the title. I believe that including the word "Government" would better convey the scope of this site to someone visiting for the first time, but the advantages of keeping a simple URL outweighs the costs of changing the URL. It's easy to change the title, however.