Where is the key? What do the colors mean?
While I see a key on the page http://en.wikipedia.org/wiki/Current_members_of_the_United_States_Congress , it doesn't show up when you click on the map's thumbnail. Unfortunately, I don't yet know how to add that kind of information to a File page (http://en.wikipedia.org/wiki/File:111_us_house_changes_update.svg) or I'd add it myself.
