Perfect for revision, this updated guide explains the unit requirements, summarises the content and includes specimen questions with graded answers.This full-colour New Edition Student Unit Guide provides ideal preparation for your unit exam:- Feel confident you understand the unit: the guide comprehensively covers the unit content and includes topic summaries, knowledge check questions and a reference index- Use up-to-date examples: fully updated in line with the 2012 US Presidential Election- Get to grips with the exam requirements: the specific skills on which you will be tested are explored and explained