Race to the White House

With humour:
http://www.howcast.com/videos/17503-How-to-Become-President

The US elections in plain English: the transcript
http://www.commoncraft.com:80/video/electing-us-president

other usefullinks:

Understanding the elections+ voca:
http://www.pocanticohills.org/election/election.htm

Understanding the issues:
http://www.timeforkids.com/news/understanding-issues/44461
meet Barack Obama, meet Mitt Romney etc...

Quiz:
http://lve.scola.ac-paris.fr/anglais/uselections/quiz.htm

Barack Obama's biography:
http://www.biography.com/people/barack-obama-12782369