[2] Daoust obtained a bachelor of arts degree from the Université de Montréal, a bachelor of business administration from the École des hautes études commerciales de Montréal, and a master of business administration from Université Laval.

[3] Prior to his election to the legislature, Daoust was the executive director of Investissement Québec, the province's business development agency.

Under Daoust, the government aided Bombardier by investing $1 billion in the Quebec multinational to help it develop the CSeries aircraft, a decision that was criticized by the public.

After a cabinet shuffle by Premier Philippe Couillard, Daoust became transport minister, when incumbent Robert Poëti returned to the back benches.

During his time in the transport portfolio, Daoust presided over the penetration of Uber into Quebec and its negative impact on the province's taxi industry.