The 2010 decennial census altered States’ weight in the Electoral College. Following each census, the United State Census Bureau conducts a process called reapportionment during which States are assigned a number of seats in the United States House of Representatives based on population. These changes to the way Americans select their president warranted an updated explanation of the system prior to the 2012 presidential election.


This EAC white paper explains the origins of the Electoral College, and the ways in which is has changed since its introduction more than 200 years ago.

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