Adlai Ewing Stevenson II was an American lawyer, politician, and diplomat.
Raised in Bloomington, Illinois, Stevenson was a member of the Democratic Party. He served in numerous positions in the federal government during the 1930s and 1940s, including the Agricultural Adjustment Administration, Federal Alcohol Administration, Department of the Navy, and the State Department. In 1945, he served on the committee that created the United Nations, and he was a member of the initial U.S. delegations to the UN. He was the 31st governor of Illinois from 1949 to 1953, and he won the Democratic Party's nomination for president in the 1952 and 1956 presidential elections.
In both the 1952 and 1956 presidential elections, Stevenson was defeated in a landslide by Republican Dwight D. Eisenhower. He unsuccessfully sought the Democratic presidential nomination for a third time at the 1960 Democratic National Convention. After President John F. Kennedy was elected, he appointed Stevenson as the United States Ambassador to the United Nations. Stevenson served from 1961 until his death in 1965 from a heart attack in London, following a United Nations conference in Switzerland.