The move would allow him to leave a mark on Parliament for years to come, as these unelected legislators will be able to sit until the age of 75.

A source familiar with the matter says that the selection process for the future senators is already underway and should be completed before his departure. After proroguing Parliament earlier this month, Trudeau announced that he will leave power after the Liberal Party chooses a new leader on March 9.

In a written response, the Prime Minister's Office confirmed that the advisory board for Senate appointments is at work to propose candidates for all vacancies.