Democratic Sen. Edward Kennedy of Massachusetts died last night after a battle with brain cancer. He was 77. MPR's Cathy Wurzer spoke with Minnesota's senior Sen., DFLer Amy Klobuchar, who got to know Kennedy when she joined the Senate in 2007. She says he helped her learn how to be a senator. Wurzer also spoke with former Minnesota Senator, Republican Dave Durenberger, who served with Kennedy from 1978 to 1994.