Iowa Democrat who began serving his state in the Senate in 1985. He is the longest-serving senator in Iowa's state history and he became the Chairman of the Senate Committee on Health, Education, Labor and Pensions.
He flew jets for the Navy for five years.
He was an early frontrunner for his party's presidential nomination in 1992, but dropped out in support of eventual winner Bill Clinton
He has two daughters with wife Ruth Harkin.
Barry Goldwater called him out for saying he flew combat missions in Vietnam, when he really hadn't.