Use statistics in your debate:
Magazines and Newspapers generally offer articles which contain facts and circumstances around news events and popular and controversial issues. Such publications usually include editorials and other opinion pieces. These publications also may tend to one side or another of the political spectrum i.e. Liberal, Conservative, Libertarian, etc. This libguide at Pace University includes a table showing these different leanings for many well know magazines and newspapers. A publication titled Magazines for Libraries (REF Z6941.M23) can provide this information as well.