OTTAWA, March 9 (Reuters) - Former central banker Mark Carney won the race to become leader of Canada's ruling Liberal Party and will succeed Justin Trudeau as prime minister, official results showed on Sunday.

Carney will take over at a tumultuous time in Canada, which is in the midst of a trade war with longtime ally the United States under President Donald Trump and must hold a general election soon.

Carney, 59, took 86% of votes cast to beat former Finance Minister Chrystia Freeland in a contest in which just under 152,000 party members voted.