US National Archives
Nara: Presidential Election Laws: Presidential Election Laws
Check out this site from the National Archives and Records Administration on the US Constitution and the United States Code for laws and provisions regarding presidential elections.
Bill of Rights Institute
Bill of Rights Institute: Understanding the Nomination Process
From its conception in the United States Constitution, to necessary adjustments in the 12th Amendment, students will understand the nomination process and role of political parties in establishing a president with the aid of this lesson.
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.
University of Virginia
Miller Center at Uva: u.s. Presidents: John Quincy Adams: Key Events in the Presidency
See a concise summary of the events in the presidency of John Quincy Adams, beginning with his selection by the House of Representatives.
Thomson Reuters
Find Law: u.s. Constitution: Twelfth Amendment
This resource reviews the text of the Twelfth Amendment and related annotations.
US National Archives
Nara: Teaching With Documents:tally of the 1824 Electoral College Vote
The National Archives and Records Administration provides a lesson, with corresponding information and documents, relating to the role of the Electoral College in the election of the president and vice-president as specified in the U.S....