Canadian Prime Minister Mark Carney’s party swept to victory in special elections on Monday, boosting the leader’s parliamentary majority as a trade war with the United States escalates. Carney’s Liberal Party secured three seats, taking the district of Chicoutimi-Le Fjord in French-speaking Quebec from the opposition Conservatives, and two other districts in Ontario and British Columbia that were previously held by the Liberals. Carney congratulated the winning candidates in a post on X, saying...