In 1959 , Symington , then Chairman of the National Security Resources Board in Washington , D.C. , was preparing to run in the 1960 presidential election and won the backing of former President and fellow Missourian Harry Truman , but eventually lost the nomination to Senator John F. Kennedy . On July 2 , 1960 , Truman announced that he would not be attending the Democratic National Convention in Los Angeles . Truman was miffed that the convention was being controlled by the " overzealous " supporters of Kennedy . Announcing his decision , Truman restated his support for the candidacy of Symington and added , " I have no second choice "
Democratic National Convention
1960 Democratic National Convention
Stuart Symington