[5][6][7] Born on April 15, 1969, in Montreal, Duhaime holds a Bachelor of Arts in political science from the Université de Montréal and a Master's degree from École nationale d'administration publique (ÉNAP).

He also worked as part of public affairs programs broadcast on Noovo, Télé-Québec, Radio X, and 98,5 FM.

[13] Duhaime spent more than a decade as a political advisor for different leaders in Ottawa and Quebec City.

In 2010, Duhaime co-founded the Réseau Liberté-Québec and the page Quebec fier (RLQ) along with Joanne Marcotte, Roy Eappen, Gérard Laliberté, Ian Sénéchal and Guillaume Leduc.

[15] On November 22, 2020, Duhaime announced he would be running in the Conservative Party of Quebec leadership election to succeed Adrien D.