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Romain Lachat

@rlachat.bsky.social
1.7K followers 745 following 36 posts

Professor of political science, Sciences Po, Cevipof, Paris - Voting behaviour - Political representation - Electoral systems

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Reposted by Romain Lachat
Marc Guinjoan @mguinjoan.bsky.social · 16/09/2026
📣 Big news! 🗓️ Today, @tonirodon.bsky.social and I we are releasing the first version of the ATTCLIMATE panel dataset! ➡️ 4 waves of panel survey data (2023–2025) on citizens' attitudes toward climate change and support for mitigation policies. 🔗 attclimate.net
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Romain Lachat @rlachat.bsky.social · 09/07/2026
📢 Job opening The Cevipof is recruiting an Assistant Professor in Political Science in the field of political institutions and contemporary transformations of democracy @cevipof.bsky.social @sciencespo.bsky.social
sciencespo.fr
Recruitement : Assistant Professor (tenure track) in Political Science
CEVIPOF / Sciences Po is recruiting an Assistant Professor (Tenure Track) in Political Science, Topic Immigration and Democracy / Political Theory. The application deadline is 18 September 2026.
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FORS Swiss Centre of Expertise in the Social Sciences @forsresearch.bsky.social · 16/04/2026
Pre-announcement: Call for questions, Selects 2027 Contribute your questions to the Swiss electoral study during the 2027 federal elections. 📅 Call: end of April 2026 🗓 Deadline: end of June 2026 Selects 2023, including datasets, questionnaires & documentation www.swissubase.ch/en/catalogue...
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Brian Nosek @briannosek.bsky.social · 01/04/2026
Can published findings be reproduced from the same data + same analysis? As part of SCORE, Miske and 127 co-authors tested this across social and behavioral science papers from 2009–2018. www.nature.com/articles/s41... OA: osf.io/preprints/me... 1/
nature.com
Investigating the reproducibility of the social and behavioural sciences - Nature
A study of reproducibility in a stratified random sample of 600 papers published from 2009 to 2018 in 62 journals spanning the social and behavioural sciences finds higher reproducibility among more&n...
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Chappatte Cartoons @chappatte.bsky.social · 24/03/2026
Initiative pour limiter la population suisse à 10 millions - © Chappatte dans Le Temps, Genève 👉chappatte.com
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Florence Faucher @ffaucher.bsky.social · 29/01/2026
Great conference to launch an excellent new book on French Democracy in Distress. @sciencespo-cee.bsky.social @vtiberj.bsky.social @caterinafr.bsky.social @cevipof.bsky.social
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British Journal of Political Science @bjpols.bsky.social · 18/12/2025
NEW - Quality Not Quantity: How a VAA Affected Voting Behavior in Three Large-Scale Field Experiments - cup.org/491pwNQ - @fresejoris.bsky.social, @simonhix.bsky.social & @rlachat.bsky.social #OpenAccess
BJPolS abstract discussing the impact of Voting Advice Applications (VAAs) on electoral outcomes and voter behavior in the European Parliament elections in Germany, Italy, and France. The text mentions a novel regression discontinuity design and statistical analysis of VAA usage and voter alignment.
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Joris Frese @fresejoris.bsky.social · 18/12/2025
🇪🇺🇩🇪 Published Today in @bjpols.bsky.social 🇮🇹🇫🇷 How a voting advice application affected voting behavior in three large-scale field experiments: shorturl.at/2ekBj TLDR of our study (with @simonhix.bsky.social & @rlachat.bsky.social) below 👇 1/14
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AUTHLIB @authlibeu.bsky.social · 15/12/2025
📣 AUTHLIB Final Conference 🗺️ Mapping the Illiberal Challenge: Patterns, Drivers, Consequences 📅 Jan 8–9, 2026 📍 @weareceu.bsky.social, Budapest Two days on illiberalism, democracy & democratic responses. 👉 Register today to secure your spot: www.authlib.eu/authlib-fina...
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Vincent Tiberj @vtiberj.bsky.social · 09/10/2025
Where is the French democracy going? Very proud of this new collective book It adresses citizens, parties, institutions, social movements etc... and gathers a brilliant team of scholars
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Romain Lachat @rlachat.bsky.social · 05/07/2025
The CERIUM-FMSH summer school comes to an end. Thanks to this fantastic group of promising young scholars: @annasawallisch.bsky.social @anninahermes.bsky.social @francescayton.bsky.social @gaetanoinglese.bsky.social @galron3.bsky.social @ginaaniano.bsky.social Isolde Hegemann
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Romain Lachat @rlachat.bsky.social · 05/07/2025
Last day of the CERIUM-FMSH summer school. Today with @jrovny.bsky.social on democracy and illiberalism. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social
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Romain Lachat @rlachat.bsky.social · 04/07/2025
Day 4 of the CERIUM-FMSH summer school, with @simonchauchard.bsky.social on Misinformation, Rumors and Hate Speech. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social
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Florian Foos @florianfoos.bsky.social · 04/07/2025
It was great talking about recent developments in campaign and (social) media influence at the CERIUM-FMSH summer school - and even better to learn about so many promising PhD projects on these topics. Thanks for having me in sunny Paris @rlachat.bsky.social & @rdassonneville.bsky.social!
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Romain Lachat @rlachat.bsky.social · 03/07/2025
We welcome today @sldelange.bsky.social at the CERIUM-FMSH summer school, to talk about far-right and populist parties. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social
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Ruth Dassonneville @rdassonneville.bsky.social · 03/07/2025
For a data collection we want to launch soon, we're looking for a German speaker who could translate our survey instrument to German. This should only take a few hours of work. Of course we are remunerating! Interested? Please reach out to @alexjabbour.bsky.social !
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Romain Lachat @rlachat.bsky.social · 02/07/2025
On the second day of the CERIUM-FMSH summer school, @florianfoos.bsky.social discussed about political campaigns and their effects. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social
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Romain Lachat @rlachat.bsky.social · 01/07/2025
Day 1 of the CERIUM-FMSH summer school. @vinarceneaux.bsky.social presents research on the effects of social media on public opinion. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social
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Romain Lachat @rlachat.bsky.social · 01/07/2025
Looking forward to welcome the participants of the 2025 CERIUM-FMSH summer school, on Challenges to Electoral Democracy. With @rdassonneville.bsky.social , @fondationmsh.bsky.social, @cerium-udem.bsky.social
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Ruth Dassonneville @rdassonneville.bsky.social · 03/06/2025
I'm recruiting 2 PhD researchers to work with me on a project studying how social groups influence vote choices! Info on the position and how to apply 👉 www.kuleuven.be/personeel/jo... Please share with interested students who would like to move to beautiful Leuven!
kuleuven.be
2 PhD positions in Electoral behavior
2 PhD positions to research how social group memberships become connected to vote choices
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Anne Applebaum @anneapplebaum.wsocial.eu · 14/04/2025
"We are living through a revolutionary change, a broad shift away from the transparency and accountability mandated by most modern democracies, and toward the opaque habits and corrupt practices of the autocratic world" www.theatlantic.com/ideas/archiv...
theatlantic.com
The Kleptocracy Presidency
Under Trump, conflicts of interest are just part of the system.
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Cas Mudde @casmudde.bsky.social · 07/04/2025
“even if [Europeans] cannot stop the attacks on US academia, different groups can help US-based academics in other ways.” My new op-Ed in @theguardian.com
theguardian.com
Trump is targeting US universities as never before. Here are four ways to help them | Cas Mudde
Supporters in Europe can offer new opportunities and minimise the isolation. Certainly they can avoid making things worse, says political scientist Cas Mudde
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Joris Frese @fresejoris.bsky.social · 20/03/2025
Published Today in PSRM: Based on a novel “Multiple Unexpected Events during Survey Design” (MUESD), I contextualize previous findings suggesting that Europeans become more empathetic toward migrants when exposed to migrant suffering. www.cambridge.org/core/journal... A Summary Thread: 1/15
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CEVIPOF - Sciences Po @cevipof.bsky.social · 19/03/2025
🦋 Welcome to our new followers! You can find here the starter pack gathering our members present on Bluesky. Go follow them ⏬ go.bsky.app/EBRGCLH
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Chappatte Cartoons @chappatte.bsky.social · 09/03/2025
L’Europe veut réarmer - © Chappatte dans Le Temps, Genève 👉 www.chappatte.com/fr/images/le...
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Chappatte Cartoons @chappatte.bsky.social · 09/03/2025
Zelensky in the crossfire - © Chappatte in NZZ am Sonntag, Zürich 👉 www.chappatte.com/en/images/ze...
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Cartooning for Peace @cartooningforpeace.bsky.social · 04/03/2025
[LE MONDE] À la une du journal @lemonde.fr aujourd’hui, un dessin par @chappatte.bsky.social (Suisse) : www.lemonde.fr/idees/articl...
lemonde.fr
Vu par… Chappatte
CARTE BLANCHE. Le dessin paru en une du « Monde » le 4 mars est signé par le dessinateur suisse, membre de l’association Cartooning for Peace.
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Thomas Zimmer @thomaszimmer.bsky.social · 02/03/2025
If you understand German: I tried to make the case I am outlining in the thread below on German television. The Trumpists really mean it. Just as on the domestic level, they are going for regime change - for a fundamentally different world order:
tagesschau.de
Interview zum Trump-Selenskyj-Eklat: "Die USA haben sich entschieden"
Europa müsse sich von dem Missverständnis verabschieden, mit US-Präsident Trump sei eine gemeinsame Politik möglich: Der Historiker Zimmer fordert, die neue Politik der USA als das zu akzeptieren, was...
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Deutschland Wählt / Österreich Wählt @de.whln.eu · 23/02/2025
BUNDESTAGSWAHL | 18 Uhr Prognose Forschungsgruppe Wahlen/ZDF Union: 28,5% (+4,4) AfD: 20,0% (+9,7) SPD: 16,5% (-9,2) GRÜNE: 12,0% (-2,8) LINKE: 9,0% (+4,1) FDP: 5,0% (-6,5) BSW: 5,0% (NEU) Sonstige: 4,0% (-4,7) Änderungen zum Wahlergebnis von 2021 #Bundestagswahl2025 #btw25
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Romain Lachat @rlachat.bsky.social · 23/02/2025
L’administration Trump met "en œuvre une politique qui vise à détruire les instruments permettant de produire des énoncés objectifs. Faire disparaître la réalité pour ne plus laisser les faits porter préjudice à la volonté du chef : c’est exactement ce que l’on attend d’une politique fasciste."
lemonde.fr
« Donald Trump et Elon Musk plongent la science américaine dans un indescriptible chaos »
CHRONIQUE. En supprimant des dizaines de milliers d’emplois et en coupant les financements des recherches qu’ils accusent de « wokisme », le président des Etats-Unis et le milliardaire mènent une atta...
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Romain Lachat @rlachat.bsky.social · 20/02/2025
www.youtube.com/watch?v=rKBM...
youtube.com
A Sad Moment in American History
YouTube video by Senator Bernie Sanders
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Zez Vaz @zezvaz.bsky.social · 14/02/2025
‘Cybertruck Man’ a cartoon in defiance of Musk #political #cartoonist #cybertruck #elon #musk #democracy #tiananmen
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Adam Przeworski @adamprz.bsky.social · 19/02/2025
I am keeping a diary of daily events, as they unfold open.substack.com/pub/adamprze... It is available to everyone. I am new to Substack, so please let me know if something is wrong with the link or the file.
open.substack.com
Diary
Week 1
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Greg Sargent @gregsargent.bsky.social · 18/02/2025
"We need to take a step back and realize that the GOP has become an authoritarian political party. It's either on board with authoritarianism or completely willing to tolerate it." On the pod, Steve Levitsky is highly Illuminating on our slide into autocracy: newrepublic.com/article/1915...
newrepublic.com
Trump-Musk Threats Darken as Their Anger at Enemies Takes Ominous Turn
As Trump and Elon Musk signal menacing new intentions on numerous fronts, a scholar of democratic breakdown explains how we’re now seeing textbook signs of a country’s slide into authoritarian rule.
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Cas Mudde @casmudde.bsky.social · 11/02/2025
This is the one article to read on contemporary (and future) U.S. politics. Laid out analytically and clearly. There is a hint of optimism (which I do not share but do appreciate).
foreignaffairs.com
The Path to American Authoritarianism
What comes after democratic breakdown.
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Romain Lachat @rlachat.bsky.social · 08/02/2025
www.theguardian.com/us-news/2025...
theguardian.com
‘In a real sense, US democracy has died’: how Trump is emulating Hungary’s Orbán
Trump has moved to gut the federal government, fire critics and reward allies – a path similar to ‘would-be dictators’ like Orbán, experts say
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Romain Lachat @rlachat.bsky.social · 05/02/2025
"If Trump, Musk and their allies [...] succeed, then the question of American politics won’t be if they’ll win the next election, but whether the Constitution as we know it is still in effect." www.nytimes.com/2025/02/05/o...
nytimes.com
Opinion | There Is No Going Back
The president’s opponents, whoever they are, cannot expect a return to the Constitution as it was.
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Thomas Zimmer @thomaszimmer.bsky.social · 05/02/2025
MAGA Feeding Frenzy Has Caused a Constitutional Crisis   The assault is coming from different angles: Project 2025. The feudal tech barons. The America First nativists. It’s not a single master plan – it’s comprehensive chaos. Some thoughts from my new piece: 🧵
thomaszimmer.substack.com
MAGA Feeding Frenzy Has Caused a Constitutional Crisis
The assault is coming from different angles: Project 2025. The feudal tech barons. The America First nativists. It’s not a single master plan – it’s comprehensive chaos
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Chappatte Cartoons @chappatte.bsky.social · 05/02/2025
👇 Proof that populists like Trump always outdo satirists: I drew this cartoon for Arte TV @artefr.bsky.social on January 18th…
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Simon Hix @simonhix.bsky.social · 04/02/2025
Where are the Democrats? This is good by @edwardluce.bsky.social on.ft.com/3EhEpzR
on.ft.com
While Democrats sleep
As Donald Trump tears up America’s rule book, the minority party can’t work out how to respond
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Romain Lachat @rlachat.bsky.social · 04/02/2025
The call for applications for the doctoral Summer School on "Challenges to Electoral Democracy" is still open!! The application deadline is February 17. More information here: www.chairedemocratie.com/files/sites/...
chairedemocratie.com
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Romain Lachat @rlachat.bsky.social · 20/01/2025
📣Summer school on "Challenges to Electoral Democracy", Paris, July 1-5, 2025📣 Organized with @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social More information and applications here👇
chairedemocratie.com
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Romain Lachat @rlachat.bsky.social · 13/12/2024
Il s'en est passé des choses en moins de 30 minutes...
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Damien Bol @damienbol.bsky.social · 09/12/2024
Cet après-midi à Paris, journée d’etude sur les règles électorales en France et ailleurs avec @jbpilet.bsky.social @bvancoppenolle.bsky.social et autres Vu la situation politique actuelle, ca vaut la peine de faire le point sur les réformes possibles www.sciencespo.fr/en/events/jo...
sciencespo.fr
Journée d’étude sur l’influence des règles électorales - CEVIPOF et LIEPP
Proportionnelle, systèmes de liste, mode de scrutin, nombre de candidats, sont autant de dimensions pouvant à la fois influencer le comportement des électeurs et celui des candidats et des partis ains...
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Paul Novosad @novosad.bsky.social · 06/12/2024
Fascinating paper on where 6000 global elites went to college. Billionaires, CEOs, heads of state, central bankers, etc. In a word: Harvard. Fully 10% of global elites went to Harvard. Elite US schools are over-represented (23% IvyPlus), but nobody comes close to Harvard. 🧵
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Miguel Pereira @miguelpereira.bsky.social · 05/12/2024
APSR will start inviting replications for a random subset of accepted papers. I really like this as well as the constructive tone around it 👏 (from the latest Notes from the Editors)
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Joris Frese @fresejoris.bsky.social · 30/11/2024
🇬🇧🇪🇺 Published Today in EJPR 🇬🇧🇪🇺 @simonhix.bsky.social @juhoharkonen.bsky.social and I find that 1/3 of the anti-Brexit shift in the UK can be attributed to the impact of cohort replacement (old voters dying, young people becoming eligible to vote)! 1/12 ejpr.onlinelibrary.wiley.com/doi/10.1111/...
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