Career
During his time in office he briefly served as a cabinet minister in the government of Premier Richard Reid from 1934 to 1935. MacLellan ran for a seat to the Alberta Legislature in the 1930 Alberta general election as a United Farmers candidate in the electoral district of Taber. MacLellan was promoted to the Executive Council of Alberta by Premier Richard Reid on July 14, 1934 to run the Public Works portfolio.
He ran for re-election in the 1935 Alberta general election but was defeated finishing a distant second place out of three candidates losing to Social Cr candidate James Hansen.
