Leduc established his first dental practice in Maniwaki, Quebec shortly after graduation.
In 1926, he married Irene Nault (1904–2005) of Maniwaki.
First elected as a member of the Liberal Party to the House of Commons in 1936 representing the district of Wright, he served until 1945 and then subsequently from 1954-1966.
Dr.
Leduc was the only French Canadian member of Parliament to support Mackenzie King's Conscription bill during World War II, a stance which was highly unpopular but which reflected his deep belief in the Canadian federalist system.An avid fisherman and hunter, Dr.
Leduc established a popular tourist camp on 31 Mile Lake near Maniwaki, Quebec.
Dr.
Leduc won several Arizona state shuffleboard championships during his winter retirement there.Dr.
and Mrs.
Leduc had 6 children: Jeannine, Pauline, Bernard, Fernand, Lise and Renee.