Final written arguments in the constitutional challenge of Prime Minister Justin Trudeau’s prorogation of Parliament are to be submitted to the Federal Court on Wednesday. Canadians must win this case. Our democracy depends on it.

“All I can say is I’m going to try my best to issue this decision before a point in time beyond which it would become moot,” said Federal Court Chief Justice Paul Crampton at the end of the two-day hearing last week, in reference to the March 24 end date of the current prorogation period.