1990 Laurier—Sainte-Marie federal by-election

1990 Laurier—Sainte-Marie federal by-election

August 13, 1990 (1990-08-13)
Seat of Laurier—Sainte-Marie
First party Second party Third party   NDP Candidate Gilles Duceppe Denis Coderre Louise O'Neill Party Independent Liberal New Democratic Alliance Bloc Québécois Popular vote 16,818 4,812 1,821 Percentage 66.92% 19.15% 7.25% Swing N/A 19.9pp 14.4pp
MP before election Jean-Claude Malépart Liberal Elected MP 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.

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.

Election results

Canadian federal by-election, August 13, 1990: Laurier—Sainte-Marie Death of Jean-Claude Malépart
Party	Candidate	Votes	%	±%
	Independent	Gilles Duceppe	16,818	66.9
	Liberal	Denis Coderre	4,812	19.1	−19.9
	New Democratic	Louise O'Neill	1,821	7.2	−14.4
	Progressive Conservative	Christian Fortin	1,120	4.5	−25.2
	Green	Michel Szabo	395	1.6	−1.9
	Independent	Daniel Perreault	123	0.5
	Independent	Rejean Robidoux	42	0.2
Total valid votes			25,131	100.0

1988 result

1988 Canadian federal election: Laurier—Sainte-Marie
Party	Candidate	Votes	%	Expenditures
	Liberal	Jean-Claude Malepart	15,956	39.07	$41,754
	Progressive Conservative	Charles Hamelin	12,113	29.66	$35,391
	New Democratic	François Beaulne	8,828	21.62	$42,678
	Rhinoceros	Sonia Chatouille Côté	2,121	5.19	$425
	Green	Philippe Champagne	1,438	3.52	$0
	Communist	Marianne Roy	175	0.43	$1,263
	Independent Marxist-Leninist	Hélène Héroux	130	0.32	$130
	Commonwealth of Canada	Daniel Gonzales	79	0.19	$0
Total valid votes			40,840	100.00
Total rejected ballots			729
Turnout			41,569	69.33
Electors on the lists			59,956
Source: Report of the Chief Electoral Officer, Thirty-fourth General Election, 1988.