Edmund Sixtus Muskie (March 28, 1914 – March 26, 1996) was an American statesman and politician who served as the 58th United States Secretary of State under President Jimmy Carter from 1980 to 1981. A member of the Democratic Party, he served as a U.S. Senator from Maine from 1959 to 1980, the 64th governor of Maine from 1955 to 1959, and a member of the Maine House of Representatives from 1946 to 1951. He was the Democratic nominee for vice president in the 1968 presidential election.
Born in Rumford, Maine, Muskie worked as a lawyer for two years before serving in the United States Naval Reserve from 1942 to 1945 during World War II. Upon his return, Muskie served in the Maine State Legislature from 1946 to 1951, and unsuccessfully ran for mayor of Waterville. Muskie was elected the 64th governor of Maine in 1954 under a reform platform as the first Democratic governor since Louis J. Brann left office in 1937, and only the fifth since 1857. Muskie pressed for economic expansionism and instated environmental provisions. Muskie's actions severed a nearly 100-year Republican stronghold and led to the political insurgency of the Maine Democrats.