"IOWA DEMOCRATIC STATE PRESIDENTIAL CONVENTION, DELEGATE, DES MOINES, IOWA JUNE 1, 1956". This pin is from the 1956 Democratic Presidential Convention in Des Moines, Iowa. Later in the Chicago, Illinois convention, Adlai Stevenson and Estes Kefauver were nominated for the president and vice president respectively. It took place on August 13-17 of 1956. Stevenson and Kefauver lost the election to the Dwight Eisenhower and Richard Nixon (Republican).