Center for Study of the Presidency
Devoted to the study of the American Presidency, historical and current information on the president and the presidency along with political and government links
LII Supreme Court Decision: Presidency
http://www2.law.cornell.edu/cgi-bin/foliocgi.exe/historic/query=[group+f_presidency:]/doc/{@1}/hit_h
Case law dealing with the issues of the presidency.
MultiEducator History of Presidential Elections
Provide graphs on both Electoral votes and popular for all US Presidential Elections.
What Does High Crimes and Misdemeamers Mean?
An examination of the meaning of the language that is used to define the impeachment process. From the conservative Claremont Institute.