Dirk Kempthorne, the charismatic former Idaho governor who went on to lead the U.S. Department of the Interior, died Friday night of complications from late-stage cancer. He was 74. Kempthorne, who also served as a U.S. senator from Idaho and as mayor of Boise, announced his diagnosis in March 2025. He called it maybe the “challenge of my lifetime,” but pledged to fight it “head-on” and ...