http://www.presidency.ucsb.edu - a website called "the American Presidency Project that contains 87,944 documents related to the Presidency.
http://www.fivethirtyeight.com/ - a website for analysis of the techniques and the information that is provided in opinion polls.
http://pewresearch.org/pubs/1031/young-voters-in-the-2008-election A website that discusses the polarity of voters, particularly young voters and how that will impact future elections on the Presidential level.
http://historymatters.gmu.edu/d/5168/ - A website created by the American Social History Project that serves as an online "U.S. survey course on the web".
http://www.tvb.org/rcentral/mediatrendstrack/tvbasics/02_TVHouseholds.asp Chart showing changing statistics on television households in 5-year increments.
http://millercenter.org/scripps/archive/speeches A site that has many presidents' speeches in written and audio form, including most of FDR's fireside chats.
http://www.livingroomcandidate.org/ - A site that contains presidential election advertisements between 1952 2008. http://ajws.org/what_we_do/education/resources/core_curriculum/ - A site with curriculum for the universe of obligation.