Islamism — defined most benignly as “the belief that Islam should influence political systems”— is, according to Joe Adam George, the Macdonald-Laurier Institute’s National Security Analyst, the “biggest existential threat to Canada within its borders.” Yet, in the English-language leaders’ election debate, when Bloc Québécois leader François Blanchet dangled the word “Islamism” for discussion, nobody took the bait.