Centrist campaign

For reasons known only to itself, the footer at the bottom of the page no longer centres properly. I've obviously tripped over something in the course of tweaking the layout today, but I'm blowed if I can think what. It's within the < body > tags, so it should have the same attributes as the rest of the page. Anyone have any thoughts? Stylesheet is here. THANKS, EVERYONE: The margin "auto" was the simplest fix. Still hunting stray divs. (UPDATE: Found it.)