Information from the National Archives about the Electoral College, includes the Electoral College Calculator that allows you to predict the results of the 2012 election and voting resources. Includes teacher resources.
Annenberg Public Policy Center site, monitors the accuracy of what is said by major political players, including presidential candidates. Includes a list of major groups that have been active or expect to be active in federal elections.
PBS Newshour calendar tracks the whereabouts of all the 2012 presidential candidates as well as other key events. All events are listed in Eastern Time.