Liberal Party leader Mark Carney Becomes Canada’s New Prime Minister: Who Is the Former Central Banker Leading the Nation Through Turbulent Times? Canada has entered a new era of leadership as Mark Carney, the former governor of both the Bank of Canada and the Bank of England, was sworn in as the country’s new prime minister following a snap election. Carney, after Justin Trudeau’s resignation, not only took over the Liberal Party leadership but led it to victory at the polls, securing his first-ever elected office.