US National Archives
Nara: u.s. Electoral College: u.s. Electoral College
National Archives and Records Administration home page on the U.S. Electoral College. Contains details on historic voting patterns as well as technical details on procedures.
This Nation
This nation.com: Electoral College
A textbook excerpt from ThisNation.com that includes a useful chart of electoral votes by state. Clickable links to pertinent articles and amendments of the Constitution are another plus.
The Dirksen Congressional Center
Congress Link: Reform the Electoral College? Two Views From Congress
Two congressmen provide arguments for and against the Electoral College, a system that has been used for over 200 years to elect the president of the United States. Contains links to more information.
New York Times
New York Times: Crossword Puzzle: The Electoral Process
Twice a month you can play a new crossword puzzle on The New York Times Learning Network. This one is called "The Electoral Process."
Other
Current Electoral Vote Predictor
This website is dedicated to tracking the electoral vote by examining the state-by-state polls. The data appears as a map, spreadsheets and table. As new state polls are released, the maps, spreadsheets, and tables will be updated.