The ascendance of Carney as a climate prime minister who didn’t talk about climate is all the more striking when considered alongside last year’s election in Mexico of Claudia Sheinbaum, a climate scientist who also avoided talking about the issue in her campaign.

The election was dominated by Mr. Trump and his relentless focus on Canada. Pierre Poilievre, the opposition leader, lost the seat he had held for 20 years.

The party fell short of a parliamentary majority, while Conservative leader Pierre Poilievre said he would stay head of his party.