Campaign ads can have a lasting effect on the political sphere that at least in one case lasted for decades. Almost 50 years after the 1964 presidential election, memories of then-president Lyndon B. Johnson's "Daisy" ad live on -- and the spot only aired once.
The slideshow below highlights some of the most eye-catching political ads from recent years. From former Delaware GOP Senate candidate Christine O'Donnell's infamous "I'm not a witch" ad, to former California GOP Senate candidate Carly Fiorina's "Demon Sheep" spot, the ads may not have all had a desirable effect on voters, but they are certainly entertaining.
We're looking forward to a 2012 election season filled with many more.