Jean-Claude Malépart Liberal Gilles Duceppe Bloc Québécois A by-election was held in the federal riding of Laurier—Sainte-Marie in Quebec on August 13, 1990, following the death of Liberal MP Jean-Claude Malépart.

[1] The by-election was held on the same day as another in Oshawa in Ontario.

The seat was won by Independent candidate Gilles Duceppe, who later co-founded the Bloc Québécois in February 1991.

[2][3]