Chrétien, who was then without a seat in the House of Commons of Canada, ran in a by-election in Boudreau's riding of Beauséjour.

He served as president of the Young Liberals and then worked for Fernand Robichaud when he was a member of the Cabinet of Canada and for Bernard Richard—his predecessor as MLA for Shediac-Cap-Pelé—when he was in the New Brunswick cabinet Prior to his election to the legislature, he worked as village administrator of Cap-Pelé.

[5] He was elected to the legislature in a by-election on October 4, 2004, to replace Bernard Richard, who had resigned to become the provincial ombudsman.

Boudreau role of Health & Wellness critic in the shadow cabinet shortly after his election.

[8][9] On June 28, 2024, he was summoned to the Senate of Canada by Governor General Mary Simon, on the advice of prime minister Justin Trudeau.