Big Bird, Romney, Mute Buttons and the Nuke

Here is a series of four of the most controversial political adds of all time:

Obama's "Big Bird" Commercial

Romney's "Mute Button" Commercial

Obama's "47%" Commercial

And Johnson's "Little Girl Nuke" Commercial.

Read more at:

http://adage.com/article/campaign-trail/big-bird-teaches-political-advertising/237703/