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Proposals
Economic model claimed
Keynesian policy of an « État régulateur » [“regulating State”] acting through its fiscal and monetary levers, instead of supply-side policy; higher revenue from taxation of wealth and large companies to fund public services and the transition; GDP decoupled from the carbon footprint.
Summary by the editors, without judgement, based on the candidate’s words quoted below. The site validates no economic model. Quotes checked on 15 October 2026.
« Nous prônons une politique économique qui aurait retenu les leçons de Keynes c’est—à-dire la nécessité d’un Etat régulateur d’une économie qui n’atteint pas d’équilibre par elle-même, qui agit grâce à ses leviers budgétaires et monétaires. Nous abandonnerons donc une politique de l’offre qui a été synonyme d’austérité pour les ménages populaires et pour les services publics. Mais le keynésianisme n’intègre pas l’effet rebond qui voit l’impact matériel se développer avec la hausse de la consommation. »
Translation by the editorsWe advocate an economic policy that would have learned the lessons of Keynes, that is to say the need for a State that regulates an economy which does not reach equilibrium by itself, a State that acts through its fiscal and monetary levers. We will therefore abandon a supply-side policy that has been synonymous with austerity for working-class households and for public services. But Keynesianism does not take into account the rebound effect, whereby the material impact grows with rising consumption.
« C’est pourquoi nous proposons une stratégie alternative visant une croissance des recettes fiscales permettant de financer un haut niveau de services publics et les investissements nécessaires à la transition écologique. Cela suppose un découplage entre l’évolution du Produit Intérieur Brut et son empreinte carbone et matière. »
Translation by the editorsThat is why we propose an alternative strategy aimed at growth in tax revenue that makes it possible to fund a high level of public services and the investment needed for the ecological transition. This requires decoupling the evolution of Gross Domestic Product from its carbon and material footprint.
« Il faut abandonner la croissance du PIB comme boussole de notre richesse nationale, pour lui préférer l'espérance de vie en bonne santé, la réalisation des droits, l’évolution des émissions de carbone ou de l'empreinte matière. Le PIB ne doit plus servir qu'à piloter notre stratégie budgétaire : la croissance de la valeur doit être complètement découplée de son impact matériel. »
Translation by the editorsWe must abandon GDP growth as the compass of our national wealth, and prefer to it healthy life expectancy, the fulfilment of rights, the trend in carbon emissions or in the material footprint. GDP should only serve to steer our budgetary strategy: the growth of value must be completely decoupled from its material impact.
« Pour répondre à ces enjeux et engager la France sur une trajectoire de maîtrise des déficits, les Écologistes défendent une fiscalité juste, efficace et orientée climat. »
Translation by the editorsTo meet these challenges and set France on a path of deficit control, the Écologistes defend fair, effective and climate-oriented taxation.
Effects announced by the candidate, not checked by the editors. They are not added to any amount on the site.
Local authority investment leveraged: €1 per euro from the State (school buildings)« C’est pourquoi un investissement de 2 milliards d’euros par an de la part de l’Etat est à notre sens nécessaire dès 2027 avec le principe que chaque euro investi par l’Etat déclenche l’investissement d’un euro par les collectivités. »
Translation by the editorsThat is why, in our view, an investment of 2 billion euros a year by the State is necessary from 2027, on the principle that each euro invested by the State triggers the investment of one euro by local authorities.
A national fund for adapting the coastline to erosion
« Donc il faut trouver un système de solidarité nationale. »
Translation by the editorsSo we need to find a system of national solidarity.
Year-round housing on the coast
« On veut que les Françaises et les Français qui le souhaitent puissent continuer à vivre sur le littoral : la spéculation foncière, c'est terminé »
Translation by the editorsWe want French women and men who wish to do so to be able to keep living on the coast: land speculation is over
Small-scale fishing and large trawlers
« On ne veut plus que les très gros chalutiers puissent venir le long de nos côtes prendre leurs quotas, les concurrencer alors qu'ils crèvent avec l'augmentation du prix des carburants »
Translation by the editorsWe no longer want the very big trawlers to be able to come along our coasts and take their quotas, competing with them when they are going under because of the rise in fuel prices
« Je vais mettre une règle simple : l'Etat ne devrait pas vous demander une information qu'il a déjà »
Translation by the editorsI am going to set a simple rule: the State should not ask you for information it already has
Quotes checked on 13 October 2026.
Campaign
Schedule13
Upcoming
Vote by members of Les Écologistes on the presidential strategy: candidacy of Marine Tondelier or rallying behind a candidate from another left-wing partyInternal vote of Les Écologistes · eventSource: Public Sénat, 21 September 2026
Presentation of the booklet « Pour un pays à hauteur d'enfants »Arcueil (Val-de-Marne) · visitSource: Campagne de Marine Tondelier, 17 September 2026
With the Green MEPs, after Ursula von der Leyen's State of the Union addressStrasbourg (Bas-Rhin) · visitSource: Campagne de Marine Tondelier, 16 September 2026
Guest on the morning showFrance Inter · broadcastSource: franceinfo, 16 September 2026
Presentation of Les Écologistes' booklet on coastlines, seas and oceansWissant (Pas-de-Calais) · visitSource: ICI (Radio France), 15 September 2026
Guest on « 8h30 franceinfo »franceinfo · broadcastSource: franceinfo, 2 September 2026
Meeting with the firefighters' inter-union body, with MP Sandra Regol, and press conferenceLes Écologistes headquarters · press conferenceSource: Campagne de Marine Tondelier, 28 August 2026
First debate between the presidential candidates, organised by the Medef (Rencontre des entrepreneurs de France), broadcast on LCIParis, Roland-Garros stadium · debateSources: franceinfo, 27 August 2026; LCP, 19 August 2026
Schedule as of 23 October 2026. Events that ended more than 60 days ago are no longer shown (2 events).
Career and transparency
Career
3 elected offices, 2 posts, 1 qualification · current: Regional councillor for Hauts-de-France (Pas-de-Calais section)
since 10 December 2022National secretary of Europe Écologie Les Verts, which became Les Écologistes; re-elected on 19 April 2025Sources: franceinfo, 11 December 2022; Europe 1, 10 December 2022; franceinfo, 19 April 2025
since 8 December 2025Designated candidate of Les Écologistes for the 2027 presidential election; nomination maintained on 21 September 2026 until the members' vote in DecemberSources: franceinfo, 8 December 2025; Public Sénat, 21 September 2026
Education
Studies at the Institut d'études politiques de Lille, specialising in environmental healthSource: Europe 1, 10 December 2022
Transparency
Nothing recorded to date.
Nothing recorded to date.
Justice
2 cases, all ongoing
Criminal proceedings in which the person is personally implicated, either ongoing or whose latest decision is less than ten years old, acquittals and dismissals (non-lieux) included. Each step rests on an official decision or statement, or on at least two reference media outlets citing the decision. No mere complaint, no suspicion, no investigative article without a decision.
Defamation proceedings over the book « Nouvelles du Front » (2017), on the municipal management of Hénin-Beaumont
Stage as of 13 October 2026: Acquittal at first instance, 6 November 2020.
Finality not established: we have not been able to establish whether this decision has been appealed, nor the outcome of any appeal. Any person implicated is presumed innocent until their guilt has been established by a final decision (Article 9-1 of the Civil Code; preliminary article of the Code of Criminal Procedure).
Offences concerned:Diffamation, sur plainte du maire d'Hénin-Beaumont, d'un de ses anciens adjoints et de l'ancien directeur général des services de la ville.
Translation by the editorsDefamation, on a complaint by the mayor of Hénin-Beaumont, one of his former deputy mayors and the town's former director general of services
· Acquittal at first instanceParis criminal court
Acquittal, together with her publisher: the court considers the remarks defamatory but accepts good faith, the book falling within a debate of general interest. The civil parties appeal. According to France 3 Hauts-de-France (19 January 2022), the Paris court of appeal, seised by the civil parties alone, dismissed their claims for damages, in the absence of established civil fault.
Sources: ICI (France Bleu), “Hénin-Beaumont : relaxe pour Marine Tondelier poursuivie en diffamation par Steeve Briois”, 6 November 2020; France 3 Hauts-de-France (franceinfo), “Justice : le maire RN d’Hénin-Beaumont, Steeve Briois, débouté de ses demandes à l’encontre de Marine Tondelier par la Cour d’appel de Paris”, 19 January 2022
Remarks made on 12 June 2023 during a visit to the Aude
Stage as of 13 October 2026: Acquittal at first instance, 29 November 2024.
Finality not established: we have not been able to establish whether this decision has been appealed, nor the outcome of any appeal. Any person implicated is presumed innocent until their guilt has been established by a final decision (Article 9-1 of the Civil Code; preliminary article of the Code of Criminal Procedure).
Offences concerned:Diffamation, poursuites engagées par deux viticulteurs de l'Aude.
Translation by the editorsDefamation, proceedings brought by two winegrowers from the Aude
· Acquittal at first instanceNarbonne criminal court
Acquittal, in line with the opinion of the prosecutor, who had sought no sentence: « Aucune intention diffamatoire » [“No defamatory intent”] was established, according to the court. The two civil parties are each ordered to pay a civil fine of €150 for the abusive nature of the proceedings.
Sources: Le Parisien (AFP), “Poursuites pour diffamation envers deux viticulteurs : Marine Tondelier relaxée”, 29 November 2024; La Dépêche du Midi, “Marine Tondelier : poursuivie pour diffamation par deux viticulteurs, la patronne des Verts relaxée”, 30 November 2024