[10] Both of Gazan's parents were organizers for the Co-operative Commonwealth Federation, the NDP's predecessor party.

[11][17] In 2019, Gazan won the NDP nomination for Winnipeg Centre over former Manitoba Attorney General Andrew Swan.

[18] She subsequently defeated incumbent Liberal Robert-Falcon Ouellette for the seat of Winnipeg Centre, retaking the riding for the NDP.

[20][21] In August 2020, Gazan introduced Motion 46 in the House of Commons of Canada, which would convert the Canada Emergency Response Benefit introduced by the federal government during the COVID-19 pandemic into a permanent basic income program.

[23] She presented a motion to the House of Commons to declare the deaths and disappearances of Indigenous women and girls a Canada-wide emergency, which passed unanimously.