The National Archives site with information about the electoral college and history.
Right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude.
U.S. Vote Foundation (US Vote) and its initiative Overseas Vote, share a mission to facilitate and increase the participation of all U.S. voters in the electoral process
A historical overview of voting rights and restrictions in the US. This site is funded by the Democratic Party.
The U.S. Election Assistance Commission (EAC) was established by the Help America Vote Act of 2002 (HAVA).
Rock the Vote is the largest nonprofit and nonpartisan organization in the United States driving the youth vote to the polls.
The White House website for voting
Nonpartisan information on elections and politics from a public broadcaster.