Kefauver, Estes, KEE faw vuhr, EHS tihs (1903-1963), a United States congressman from Tennessee, won fame in 1950 as head of a U.S. Senate committee investigating organized crime. He was the Democratic candidate for vice president in 1956. He and presidential candidate Adlai E. Stevenson lost to President Dwight D. Eisenhower and Vice President Richard M. Nixon.