Research procedure for identifying books, journal and newspaper articles, campaign finances, campaign ads, political advertising, public opinion polls, and election data.
The Wesleyan Media Project was established in 2010 to track advertising in federal elections
Researchers can apply and pay a small fee to access data going back to 2004.
At least one campaign video apiece for each of the major Presidential candidates, 1952-2008. Available in a variety of viewing formats, including RealPlayer and Windows Media.
Finding Current Political Ads
For more recent political ads try searching on YouTube or if you know the url for the campaign website, look it up in the Wayback Machine