She previously served as the Critic for Status of Women and 2SLGBTQ+ Issues, and is the Official Opposition Deputy Whip.

[citation needed] In her first term as Member of the Legislative Assembly of Alberta, Irwin advocated against conversion therapy by citing the harmful organization Journey Canada with its ties to this practice.

[12] Another issue Irwin strongly advocated on was the legal protections of gay-straight alliances (GSAs) in the education system in Alberta.

Irwin has tabled Bill 205, the Housing Security Act, which would bring in temporary rent caps.

[15] Irwin has also been a voice for her unhoused constituents, calling for an end to encampment sweeps and urging immediate investments in affordable and permanent supportive housing.