Candidate dossier / — · Côte-du-Sud

Where

The challenger

QLPQuebec Liberal Party

Sylvain Lemieux

Côte-du-Sud

31.7points behind the leader

CAQCoalition avenir Québec

DEFENDS THE SEAT

Mathieu RivestCôte-du-Sud

53.6 %

Mathieu RivestCoalition avenir Québec · Defends the seatCAQ since 2018

The climb · 2018

CAQThe seat

QLPSylvain Lemieux

QSGuillaume Dufour

PQMichel Forget

PCQFrédéric Poulin

ÉASylvain Cloutier

Gap at the last election31.7 points

Retrospective reconstruction. The 2017 map was used in 2018 and 2022. H2 (2014) excluded: map change not reviewed. No biography inferred.

Nomination status: Confirmed historical candidacy

A gap measured at the last election, not a prediction.

Reason : Current party hold unverified

The arithmetic behind the assignment

H1 · 2018 · Côte-du-Sud

Party at the previous election : 22.0 %

Strongest opponent at that election : 53.6 %

32,799 valid votes · Verified comparable territory

Inspect all votes and the denominator

Marie-Eve Proulx · CAQ17,595 votes
Simon Laboissonnière · QLP7,212 votes
Guillaume Dufour · QS3,560 votes
Michel Forget · PQ3,315 votes
Marc Roussin · PCQ575 votes
Renaud Blais · PN304 votes
Gabriel Dubé · BP238 votes

Sum of candidate votes = 32,799 / 32,799 valid votes

The calculation

53.6 % − 22.0 % = 31.7 points

Calculated using unrounded values; displayed to one decimal.

The person behind the assignment

Why run here?

No interview published.

Retrospective reconstruction

Outcome

Sources and supporting evidence (4)

Élections Québec ↗Official file retained with SHA-256 checksum and schema validation.September 6, 2026 · SHA-256 66a4410f46b2c664
Élections Québec ↗Official 2022 candidacies; incumbent indicator used for pre-election context.September 6, 2026 · SHA-256 488057227cc47565
Élections Québec ↗Official map history: twelve territories retained in 2026; 2017 map used in 2018 and 2022.September 6, 2026 · SHA-256 6b23cd706bd2ca87
Élections Québec ↗Official file retained with SHA-256 checksum and schema validation.September 6, 2026 · SHA-256 ff268ada6bee3c51

Another dossier awaits.

No.The challengerThe incumbent / opponentGap at the last electionSave this dossier

Louis-Charles Fortier

PCQConservative Party of Quebec

Jacques-Cartier

The incumbent / opponentGregory KelleyQuebec Liberal Party

69.2 pts

Chantal Beauregard

PQParti Québécois

Jacques-Cartier

The incumbent / opponentGregory KelleyQuebec Liberal Party

69.0 pts

← Back to the ranking

Candidate dossier / — · Côte-du-Sud

Where

The challenger

QLPQuebec Liberal Party

Sylvain Lemieux

Côte-du-Sud

31.7points behind the leader

CAQCoalition avenir Québec

DEFENDS THE SEAT

Mathieu RivestCôte-du-Sud

53.6 %

Mathieu RivestCoalition avenir Québec · Defends the seatCAQ since 2018

The climb · 2018

CAQThe seat

QLPSylvain Lemieux

QSGuillaume Dufour

PQMichel Forget

PCQFrédéric Poulin

ÉASylvain Cloutier

Gap at the last election31.7 points

Retrospective reconstruction. The 2017 map was used in 2018 and 2022. H2 (2014) excluded: map change not reviewed. No biography inferred.

Nomination status: Confirmed historical candidacy

A gap measured at the last election, not a prediction.

Reason : Current party hold unverified

The arithmetic behind the assignment

H1 · 2018 · Côte-du-Sud

Party at the previous election : 22.0 %

Strongest opponent at that election : 53.6 %

32,799 valid votes · Verified comparable territory

Inspect all votes and the denominator

Marie-Eve Proulx · CAQ17,595 votes
Simon Laboissonnière · QLP7,212 votes
Guillaume Dufour · QS3,560 votes
Michel Forget · PQ3,315 votes
Marc Roussin · PCQ575 votes
Renaud Blais · PN304 votes
Gabriel Dubé · BP238 votes

Sum of candidate votes = 32,799 / 32,799 valid votes

The calculation

53.6 % − 22.0 % = 31.7 points

Calculated using unrounded values; displayed to one decimal.

The person behind the assignment

Why run here?

No interview published.

Retrospective reconstruction

Outcome

Sources and supporting evidence (4)

Élections Québec ↗Official file retained with SHA-256 checksum and schema validation.September 6, 2026 · SHA-256 66a4410f46b2c664
Élections Québec ↗Official 2022 candidacies; incumbent indicator used for pre-election context.September 6, 2026 · SHA-256 488057227cc47565
Élections Québec ↗Official map history: twelve territories retained in 2026; 2017 map used in 2018 and 2022.September 6, 2026 · SHA-256 6b23cd706bd2ca87
Élections Québec ↗Official file retained with SHA-256 checksum and schema validation.September 6, 2026 · SHA-256 ff268ada6bee3c51

Another dossier awaits.

No.The challengerThe incumbent / opponentGap at the last electionSave this dossier

Louis-Charles Fortier

PCQConservative Party of Quebec

Jacques-Cartier

The incumbent / opponentGregory KelleyQuebec Liberal Party

69.2 pts

Chantal Beauregard

PQParti Québécois

Jacques-Cartier

The incumbent / opponentGregory KelleyQuebec Liberal Party

69.0 pts