Impact of third party candidates on presidential elections

Democrats and Republicans have both been talking about the possibility of a third party run and what that might mean for establishment candidates. MPR NewsCut Blogger Bob Collins talks with Tim Walch, historian and retired director of the Herbert Hoover Presidential Library, about the history of third party politics in presidential elections. And with Julia Azari, Associate Professor of Political Science at Marquette University, about the reality of a third party bid taking hold at this point in the election cycle.