He served in the Legislative Assembly of Alberta from 1952 to 1955 and again from 1959 to 1971 as a member of the Social Credit caucus.

Aloisio first ran for a seat to the Alberta Legislature as a Social Credit candidate in the 1952 general election.

[1] He ran for a second term in the 1955 general election and was defeated by Liberal candidate Richard Hall.

[2] He regained the seat for Social Credit in the 1959 election, defeating Hall by a large majority.

[3] In the 1963 general election, Aloisio faced a strong challenge from provincial Liberal leader Dave Hunter, but managed to hang on to his seat.