Reierson held numerous portfolios in the governments of Premier Ernest Manning and Harry Strom from 1955 to 1971.
[1] Reierson first ran for the Alberta Legislature as the Social Credit candidate in the electoral district of St. Paul in the 1952 general election.
[2] In the 1955 general election Reierson defeated Liberal candidate J.R. Sweeney with over half the popular vote.
[3] On August 2, 1955, Premier Ernest Manning appointed Reierson Minister of Industries and Labour.
[10] In 2006 Reierson, Nick Dushenski and Arthur Dixon visited the Alberta Legislature as its most senior former members during its centennial celebration.