After retiring from the Senate, Coats served as U.S. Ambassador to Germany from 2001 to 2005, and then worked as a lobbyist in Washington, D.C. He was re-elected to the Senate by a large margin in 2010, succeeding Bayh, who announced his own retirement shortly after Coats declared his candidacy. Coats declined to run for re-election in 2016, and was succeeded by Todd Young.