Chrystia Freeland, the former deputy prime minister, sought to distance herself from Mr. Trudeau in a public letter criticizing him for “costly political gimmicks.”

Chrystia Freeland blew up the career of her top political ally, Justin Trudeau. Now, she is taking on an old friend, the former central banker Mark Carney.Freeland, 56 years old, said on X Friday that she intends to run for the leadership of Canada’s Liberal Party and become the country’s next prime minister,

Trudeau announced his resignation after facing an increasing loss of support from both within his party and in the country.