serving from 1920 to 1922, while simultaneously serving as second assistant district attorney of Middlesex County under his uncle, Endicott Peabody Saltonstall, from 1921 to 1922. He was elected to the Massachusetts House of Representatives that same year; there he rose to the position of Speaker of the House, which he held from 1929 to 1937. In 1930 Saltonstall became a compatriot of the Massachusetts Society of the Sons of the American Revolution. Governor of Massachusetts In 1936, Saltonstall decided to seek the Republican nomination for Governor of Massachusetts. In the party convention, conservative forces prevailed in securing the nomination for John W. Haigis. Saltonstall's friends were able to engineer his nomination for lieutenant governor. Both Haigis and Saltonstall were defeated by their Democratic rivals, although Saltonstall's margin of defeat, just over 7,000 votes, was small enough to merit a recount; he demurred. He ran again for governor two years later, and won a decisive victory over former Boston Mayor James Michael Curley, who had been involved in a bruising Democratic primary fight against the incumbent Charles F. Hurley. He was reelected in 1940 and 1942; the 1940 election win was by an extremely narrow margin. During his tenure, Saltonstall mediated a Teamsters strike, reduced taxes, and retired 90 percent of the state's debt. He served as president of the National Governors Association from 1943 to 1944. In 1944, he also served as the fifth president of the Council of State Governments. U.S. Senator In 1944, Saltonstall was elected to the United States Senate in a special election to fill the unexpired term created by the resignation of U.S. Senator Henry Cabot Lodge, Jr. He was re-elected three times, serving from 1945 to 1967. Early in his first term, in April 1945 he was one of a dozen Senators and Congressmen who toured the Buchenwald Concentration Camp at the invitation of Gen. Dwight Eisenhower to attest to the reality of Nazi atrocities. Those he defeated included John H. Corcoran in 1944, John I. Fitzgerald in 1948, Foster Furcolo in 1954, and Thomas J. O'Connor in 1960. During his tenure in the Senate, he served as the Senate Republican Whip and on five influential Senate committees. He also served as the chair of the Senate Republican Conference, 1957–1966. He was viewed as a political moderate, and served as a mediating force between the party's conservative and progressive wings. He was an