Techpresident.com

http://www.techpresident.com

Andrew Rasiej and Micah Sifry started this group blog to show how the presidential candidates are using the Web, and how it is affecting their campaign. It offers opposing viewpoints and opinions.  

Washington Post - Mixed Messages

http://projects.washingtonpost.com/politicalads/

This site tracks political advertising, it is a database of all advertisements funded by campaigns, parties, committees, and advocacy groups. The ads can be searched through a variety of ways, such as year, state, character, race, type, among others.

Google Elections Video Search

http://www.google.com/educators/videosearch.html