Campaign technology for politics and business

Liegey Muller Pons


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A web and mobile application to optimise campaigns

Fifty Plus One combines a socio-électoral database covering tens of thousands of territories with a predictive model developed by our scientific team. An innovative tool for targeted field campaigns.



door to door campaigns

Scientific research has shown that door to door canvassing is the most effective form of communication to convince voters and local leaders or work with to hard-to-reach communities.


What we can do for you


Analyse influence networks in your area
Visualise every territory’s characteristics and local leaders you need to work with.

Involve the population in decision-making
Communicate effectively with the population to involve them in the decision-making process, including them in your communication strategy. Adapt your methods to local specificities.


Map socio-electoral issues in your constituency
Identify key issues for your constituents using their socio-demographic profiles.

Plan and monitor your field work
Target your field work using electoral data. Locate your supporters to increase mobilisation.

Keep track of your communication with constituents
Keep track of every interaction between your constituents and your team. Centralise your communication including newsletters, emails and texting.


Visualise your territory and its key evolutions
Identify potential hotspots and anticipate the need for consultation. Work out your opponents’ real influence.

Collect data directly from the field
Keep track of residents’ concerns and questions. Detect rumors before they spread.

Communicate with the population and forestall opposition
Communicate your message directly to residents by organising your own doorknocking campaign.


Access a socio-electoral database that is unique in Europe
Visualise electoral and socio-demographic data on a very fine scale thanks to Fifty Plus One’s mapping feature.

Target the voters who will make a difference on election day
Identify key neighbourhoods and socio-demographic profiles.

Organise and monitor your campaign in real time
Simply and easily organise your targeted field work and keep track of your campaign thanks to an interactive map.

Grow your supporter and activist base
Organise your contact database, mobilise them and make your campaign more effective.


Discover Fifty Plus One

Please fill in the form below.

If you are running for an election,
please indicate your constituency.

“I have to say that without Liegey Muller Pons we probably wouldn’t have considered doing it even though at this stage of the project it was very useful to communicate directly with residents.”

Simon Besnard 
Regional Director at ENGIE Green

“50+1 allows me to be more efficient in my communication with constituents. I can keep track of my work across the constituency in real time. It’s a new way to organise your campaigning.”

Luc Belot
Member of Parliament for the 1st constituency of the Maine-et-Loire

“Considering the context, Liegey Muller Pons’s intervention was very interesting in many ways : we were able to meet residents and answer their questions and concerns about the project.”

Thibaud Chatry 
Project Director at RTE


Guillaume Liegey
Founder & CEO

Arthur Muller
Founder & COO

Vincent Pons
Founder & CSO

   Hannah Bull
   Data  scientist

   Olivier Herlem
    Data  scientist

Romain Damian
Data scientist

Benoit Rauturier
Data scientist

Grégoire Mialon
Data scientist

     Inès  Levy
    Project manager

César Pierre
Public relations

 Fabrice Rivière
Product manager

Raphaëlle Tulane
Business developer

Sibylle Meffre
Business developer

Antoine Bianco
Business developer

 Jed Bartlet 

A-C Deseilligny
Business developer

Marion Germa
Business developer

Hugo Foyart
Front developer

Lois Riou
Front developer

We are hiring !



Product support, press,
contact us !
 +33 (0) 1 43 55 35 68


106 rue du Chemin Vert
75011, Paris

Friedrichstraße 68
10117, Berlin

2-4 Boundary Street
London, E2 7DD


Notre offre


Analysez les dynamiques d’influence sur votre territoire
Visualisez les caractéristiques de chaque territoire et les influenceurs locaux à prendre en compte dans votre stratégie d’influence.

Faites entrer la population dans le jeu des parties prenantes
Communiquez efficacement avec la population afin qu’elle entre dans le jeu des parties prenantes et serve de relais à votre stratégie de communication. Adaptez vos méthodes aux spécificités de chaque territoire.

Visualisez les dynamiques de votre territoire
Identifiez les points chauds potentiels et anticipez les besoins de concertation. Quantifiez le poids réel des opposants sur le terrain.

Collectez de l’information directement sur le terrain
Faites remonter les sujets de préoccupation des riverains et les questions qu’ils se posent. Repérez les rumeurs avant qu’elles ne se diffusent.

Communiquez auprès de la population et désamorcez les oppositions
Faites passer vos messages directement auprès des riverains en organisant vos propres opérations de communication en porte-à-porte.

Cartographiez les grands enjeux socio-électoraux de votre cisconscription
Identifiez les thèmes clés pour vos administrés à partir de leurs profils socio-démographiques.

Planifiez et suivez vos déplacements sur le terrain
Tenez compte des dynamiques électorales pour cibler vos déplacements. Géolocalisez vos soutiens pour maximiser la mobilisation.

Enrichissez votre base de contacts de vos échanges avec les citoyens
Gardez une trace de tous les échanges entre votre équipe et vos administrés. Centralisez toute votre communication, de vos newsletters aux emails et SMS d’invitation.

Accédez à une base de données socio-électorales unique en Europe
Visualisez sur l’interface cartographique de Cinquante Plus Un des données électorales et socio-démographiques au niveau le plus fin disponible.

Ciblez les électeurs qui feront la différence le jour de l’élection
Identifiez les quartiers prioritaires et les profils socio-démographiques des électeurs à convaincre.

Pilotez votre campagne en temps réel
Organisez en un instant des actions ciblées et suivez pas à pas les actions de vos volontaires sur une carte interactive.

Faites croitre votre base de sympathisants et de volontaires
Organisez et qualifiez vos contacts pour les mobiliser pour votre campagne et démultipliez l’ampleur de vos actions.

Créer un compte d'essai


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Ready-to-use door to door campaigns

Scientific research has shown that door to door canvassing is the most effective form of communication to convince voters and local leaders or work with to hard-to-reach communities.