If you need to know it, it's in this book! Cracking the AP U.S. Government and Politics Exam, 2012 Edition has been optimized for e-reader viewing with cross-linked questions, answers & explanations, cross-references, and index. It includes:
A comprehensive glossary of key U.S. Government & Politics terms
An in-depth review of the institutions of government, elections, political parties, interest groups, public policy, civil rights, constitutional underpinnings, and more
Useful techniques for cracking the free-response section
2 full-length practice tests with detailed explanations for all multiple choice questions, plus full breakdowns of how to tackle the free-response questions and examples of "Excellent" essays for each one
Updated strategies that reflect the AP test scoring change