Left Party Adrien Quatennens became a follower of
Jean-Luc Mélenchon in 2008, joining him in the
Left Party (PG) in 2013 and becoming a member of its national council two years later. He also served alongside
Ugo Bernalicis as PG secretary in Nord, being based in Lille. In the
2014 French municipal elections, Quatennens ran unsuccessfully for a seat on the municipal council of Lille as a part of Hugo Vandamme's PG electoral list.
La France Insoumise and National Assembly Quatennens was nominated by LFI in
Nord's 1st constituency during the
2017 French legislative elections, winning 19.38% of the vote in the first round against 32.61% for Christophe Itier of
La République En Marche (LREM). The
insoumis was then elected to the National Assembly in the second round with 50.11% of the vote, or a margin of 50 votes. As a deputy, Quatennens sits on the
Social Affairs Committee. His committee work has included a review of the 2017 labour law reform bill, against which he introduced a motion for preliminary rejection. Quatennens' early days in the National Assembly attracted much media attention, especially after he gave a speech lasting half an hour on 10 July 2017. He also advocated for an LFI bill to recognize mental health issues linked to
occupational burnout as
occupational diseases. Quatennens is considered a rising figure in LFI, being named party coordinator by the LFI representative assembly to replace
Manuel Bompard on 22 July 2019. Quatennens was chosen by his party to lead its campaign against the
Philippe government's pension reform bill. He denounced the proposal as an "inequitable" project due to differences in life expectancy between social classes as well as its ultimate goal of effectively raising the retirement age. Quatennens was one of the French political figures targeted by
Pegasus spyware under the orders of the government of
Morocco, leading him to file a legal complaint in court. The
2022 presidential election saw Mélenchon come in first place in Quatennens' constituency, winning 41.8% of the vote in the first round. Quatennens successfully ran for re-election in the subsequent
2022 French legislative elections under the LFI banner. He was one of 15 National Assembly candidates nationwide to win with over 50% of the vote in the first round, recording one of the best electoral results in his party. On 18 September 2022, Quatennens stepped down from his duties as coordinator of La France Insoumise, following a
domestic violence controversy with his wife, Céline Quatennens. He was initially a candidate of the
New Popular Front ahead of the
2024 legislative election, though he withdrew his candidacy on 16 June. == Personal life ==