2025 Arthabaska provincial by-election

2025 Arthabaska provincial by-election

August 11, 2025

Riding of Arthabaska
Turnout59.98% (Decrease 14.12pp)
  First party Second party
 
Candidate Alex Boissonneault Éric Duhaime
Party Parti Québécois Conservative
Popular vote 17,327 13,081
Percentage 46.37% 35.01%
Swing Increase 36.36% Increase 10.32%

  Third party Fourth party
 
PLQ
CAQ
Candidate Chantale Marchand Keven Brasseur
Party Liberal Coalition Avenir Québec
Popular vote 3,481 2,693
Percentage 9.32% 7.21%
Swing Increase 5.56% Decrease 44.54%

MNA before election

Vacant[a]

Elected MNA

Alex Boissonneault
Parti Québécois

The 2025 Arthabaska provincial by-election was held on August 11, 2025.[1] The seat was represented by Eric Lefebvre of the CAQ until he resigned on 18 March 2025 to run for the partially-overlapping federal riding of Richmond—Arthabaska in the 2025 Canadian federal election.[2]

In an attempt to win a seat in the National Assembly, Conservative Party of Quebec leader Éric Duhaime ran as a candidate in the by-election; he finished second behind the Parti Québécois' Alex Boissonneault.[3] It was a recent stronghold for the Coalition Avenir Québec before Boissonneault became the first member of the Parti Québécois to be elected in the riding since 1998.

Background

The seat is located in the Centre-du-Québec region of Quebec; it notably includes municipalities of Victoriaville, Plessisville, Princeville, and Saint-Christophe-d'Arthabaska.[4]

The by-election is considered a test of leadership for Premier François Legault.[2] A major issue is the United States trade war with Canada and Mexico.[5]

The writ for the by-election was drawn up on July 8.[6]

Candidates

Result

Quebec provincial by-election, : Arthabaska
Resignation of Eric Lefebvre
** Preliminary results — Not yet official **
Party Candidate Votes % ±%
Parti Québécois Alex Boissonneault 17,327 46.37 +36.36
Conservative Éric Duhaime 13,081 35.01 +10.32
Liberal Chantale Marchand 3,481 9.32 +5.56
Coalition Avenir Québec Keven Brasseur 2,693 7.21 -44.54
Québec solidaire Pascale Fortin 548 1.47 -7.76
Climat Québec Trystan Martel 96 0.26 -0.31
Union Nationale Eric Simard 55 0.15
Équipe Autonomiste Louis Chandonnet 31 0.08
Independent Denis Gagné 29 0.08
Independent Arpad Nagy 24 0.06
Total valid votes 37,365 98.95  
Total rejected ballots 398 1.05 -0.51
Turnout 37,763 59.98 -14.12
Eligible voters 62,960 +1.35
Parti Québécois gain from Coalition Avenir Québec Swing +40.45
  1. ^ The seat has been vacant since Eric Lefebvre resigned on 18 March 2025 to run in the federal electoral district of Richmond—Arthabaska.

Previous result

2022 Quebec general election: Arthabaska
Party Candidate Votes % ±%
Coalition Avenir Québec Eric Lefebvre 23,447 51.75 -10.09
Conservative Tarek Henoud 11,187 24.69 +22.36
Parti Québécois Mario Beauchesne 4,538 10.02 +0.62
Québec solidaire Pascale Fortin 4,179 9.22 -3.35
Liberal Luciana Arantes 1,702 3.76 -7.60
Climat Québec Trystan Martel 256 0.57
Total valid votes 45,309 98.44
Total rejected ballots 720 1.56 -0.31
Turnout 46,029 74.10 +4.61
Electors on the lists 62,120
Coalition Avenir Québec hold Swing -16.22

References

  1. ^ https://www.electionsquebec.qc.ca/en/pressreleases/a-by-election-will-be-held-on-august-11-2025-in-the-electoral-division-of-arthabaska/
  2. ^ a b Olivier, Annabelle (March 15, 2025). "What's at stake in Monday's provincial byelection in Terrebonne, Que". CBC News.
  3. ^ "Results of the by-election in the Arthabaska electoral division". Élections Québec. March 10, 2022. Retrieved August 12, 2025.
  4. ^ Iyare, Osa (April 17, 2024). "Quebec MNA Eric Lefebvre leaves the CAQ for Poilievre's Conservatives". CityNews Montreal. Retrieved April 17, 2024.
  5. ^ Lacroix-Couture, Frédéric (March 11, 2025). "Quebec 'can do a lot of damage to Mr. Trump,' Legault says amid trade war". La Presse Canadienne.
  6. ^ https://www.cbc.ca/news/canada/montreal/arthabaska-riding-byelection-1.7579545
  7. ^ https://www.montrealgazette.com/article1064577.html