You can search all of ProQuest for articles, books, images, videos and more related to politics and government or limit to specific databases like these:
Search Academic Search Complete and MasterFILE Premier
You can search all of MARVEL! for articles, books, related to politics and government or choose specific databases.
You can use CQResearcher to locate topics for papers. CQResearcher contains reports on current events. Each report includes: an overview, background information, current situation, outlook, and pro/con.