Cain Blames Perry, Romney for Sexual Harassment Allegations

Herman Cain says old charges of sexual harassment were dredged up by Rick Perry's campaign, which suggests that maybe they came from agents of Mitt Romney. The Cain blame-game has been going on for a week, and that's viewed as unprecedented by some hardy veterans of political circuses in the past. How much will it matter in the Republican presidential campaign? Ryan Lizza is Washington correspondent for the New Yorker magazine.