Politics versus purity Rove, DeMint vie for GOP's rudder

Dave Weigel, political reporter for Slate, talks with Ezra Klein about the pitched battle within the Republican Party between Jim DeMint, who is leaving the Senate to bring his style of party purity to lead the Heritage Foundation, and Karl Rove, who recognizes the (expensive) electoral shortcomings of growing Republican extremism.Dec. 7, 2012