Washington Post has political ads database
If you just can't get enough of political advertising, go to the Washington Post "Mixed Messages": The database includes political advertisements funded by campaigns, parties, committees, and independent advocacy groups. Most of the ads are tied to specific U.S. House, U.S. Senate, or gubernatorial races throughout the country. Some of the ads are more general "issue" or advocacy ads not tied to a particular race or candidate. You can search for ads based on the criteria listed below.
101 Ads Catalogued
» By Candidate/Organization
» By State
» By Party
» By Type of Race
» By Issue
» By Character
» By Cue
» By Dissemination
» By Music
» By Narrator Gender
» By Type
-- Mixed Messages: Tracking Political Advertising | washingtonpost.com's Political Ads Database