This revised 2012 edition sketches the way primary and general elections work, not only the role of political parties, but also the nuts and bolts of voting machines and poll workers, opinion polls and campaign finance.
USA Elections in Brief
04 January 2012
(This is a product of the Bureau of International Information Programs, U.S. Department of State. Web site: http://iipdigital.usembassy.gov/iipdigital-en/index.html)