— Few people forecast the apparent comeback of Jagmeet Singh of the New Democrats and Yves-François Blanchet of the Bloc Québécois. In interviews long before the campaign actually started, several political analysts and political organizers were already predicting that Mr. Singh was leading his party to disaster and that he’d soon be out of his job. The Bloc was such a mess that Mr. Blanchet was made its leader in January simply by being the only applicant for the job.

The reversal of their fortunes, like Mr. Trudeau’s turnaround in 2015, is further evidence that campaigns do matter.

— The new commission in charge of official election debates scored one of the biggest misses of the election and then followed it up with a hit. With its five moderators and segments in which all six candidates attempt to debate at the same time, it’s safe to say that the English language debate was a fiasco.

But then came the French language debate. Its single moderator, Radio-Canada’s Patrice Roy, kept the leaders firmly in check but in a good natured way. Four journalists and members of the public asked pointed questions. And dividing the leaders into groups of three for the open debating ended the noisy squabbling.