On August 26, 2026, Paul St‑Pierre Plamondon, the leader of his party in the National Assembly of Quebec, announced that he would not allow Vincent Marissal to run as the party’s candidate in the Taschereau riding of Quebec City. The decision was explained as a response to alleged violations of the Assembly’s code of ethics by the incumbent member.

The announcement came on the eve of the upcoming provincial election, a period when Quebec parties are finalising their slates of candidates for the ballot. By rejecting Marissal’s nomination, the party will need to identify an alternative representative for the Taschereau constituency before the election filing deadline.

The code of ethics referenced governs the conduct of all members of the National Assembly. Marissal is accused of breaching provisions of that code, though the specific nature of the alleged infractions has not been disclosed in the public statement issued by the party leader.

In his brief statement, Plamondon cited the alleged ethical breaches as the sole reason for refusing Marissal’s candidacy. No additional commentary or justification was provided, and the party did not release further details about any internal review or investigation that may have preceded the decision.

The timing of the move places the Taschereau riding among several constituencies where parties are still adjusting their candidate lists in preparation for the election. Other political groups have also been confirming their nominees as the campaign season approaches.

The National Assembly of Quebec has not issued a separate comment regarding the allegations against Marissal or the party’s decision to block his candidacy. As a result, the Taschereau riding will be contested by a new, as yet unnamed, candidate from the party in the forthcoming provincial vote.

The development underscores the procedural role party leaders play in vetting candidates against ethical standards before elections, and it adds another variable to the electoral landscape in Quebec as voters prepare to head to the polls later this year.