Lloyd Cleworth Stinson (February 29, 1904 – August 28, 1976) was a politician in Manitoba, Canada, and the leader of that province's Co-operative Commonwealth Federation (CCF) from 1953 to 1959. Although widely regarded as a capable leader, he was unable to achieve a major electoral breakthrough for his party. Stinson was born in Treherne, Manitoba, and received education there and in Winnipeg. He graduated from Theology United College in 1933, and was ordained as a United Church minister. He received his B.D. in 1935, and took post-graduate courses in history and political science in 1940 and 1941. Stinson stepped down as an active minister in 1942, and become Provincial Secretary for the provincial CCF the following year. He edited the "Manitoba Commonwealth" newspaper from 1943 to 1946, and served as a Winnipeg alderman from 1943 to 1944. His defeat in 1944 was partly due to vote-splitting with a Communist candidate. Unusually for a social democrat, Stinson's base was in the southern part of Winnipeg (after the General Strike of 1919, the north end generally elected socialist and labour candidates while the south supported pro-business figures). Stinson was defeated in Winnipeg South Centre in the federal election of 1945, though coming a respectable second to the victorious Liberal candidate. Later in the year, he was elected to the Legislative Assembly of Manitoba as one of ten members for the city of Winnipeg. (Winnipeg elections were determined by prefential balloting, with the entire city as one constituency). Stinson placed second among the CCF candidates, trailing only party leader Seymour Farmer. The electoral map was redrawn in 1949, with Winnipeg divided into three ridings (each of which elected four members). Stinson was the only CCF candidate elected in Winnipeg South that year; he came very close to outpolling longtime Liberal-Progressive cabinet minister John Stewart McDiarmid for first position on the first count. The larger election picture was disappointing for the CCF, with the party winning only seven of 57 seats. Stinson became one of the leading CCF figures in the legislative, often outshining party leader Edwin Hansford. Hansford resigned as CCF house leader in 1952, and Stinson was chosen to replace him on December 19, 1952. He was acclaimed as the official party leader on April 25, 1953 by the CCF council, and was subsequently confirmed without opposition by a provincial convention. Stinson was a capable politician, and had the ability to reach