The campaign ad that changed American politics

Long before Hillary Clinton answered that 3 a.m. phone call or Herman Cain's chief of staff puffed on a cigarette in a campaign advertisement, there was the young girl in a meadow of flowers, picking petals off a daisy.

Author Robert Mann calls it the "most famous and notorious ad in political history." In his new book "Daisy Petals and Mushroom Clouds: LBJ, Barry Goldwater, and the Ad That Changed American Politics," Mann takes readers back to the 1964 presidential contest.

"This was really the first campaign that relied almost solely on creative advertising principles," Mann told CBS News Chief Washington correspondent Bob Schieffer. "This was the first time that politics had been treated creatively and advertised creatively as soap and soup and cereal."

In an interview with Schieffer, Mann explains how the infamous ad came to be, why he chose to study it and how it changed political advertising forever. Watch the interview above.