(LREM) who served as a member of the French National Assembly from the 2017 until 2022, representing the 1st constituency of the department of Charente.

[3] In the National Assembly, Mesnier served on the Committee on Social Affairs.

[4][5] In addition to his committee assignments, Mesnier was also a Vice-President of the French-British Parliamentary Friendship Group.

[6] Also from November 2017, Mesnier was part of LREM's executive board under the leadership of the party's successive chairmen Christophe Castaner and Stanislas Guerini.

[8] He was defeated by René Pilato of La France Insoumise in the by-election.