Political scientist, CNRS researcher at Sciences Po, CEE - currently at Centre Marc Bloch in Berlin: researching comparative politics, party competition and how elections shape policy
🚨 New WP w/ @leonardocarella.bsky.social on OSF
doi.org/10.31235/osf...
We usually think that social identities precede preferences
We show the reverse is also true: people update their social identities to match their immigration preferences
Focus: class identity in 🇬🇧 + Christian identity in 🇮🇹
I'm hiring!
Three-year postdoc (80%) in my research group at @ipz.bsky.social, starting January 2027. Digital technology and politics, some teaching. Deadline: 30 September 2026.
Questions welcome, and please share!
www.ipz.uzh.ch/dam/jcr:bbee... (pdf)
How do individuals normatively assess changes to the social order and what does this tell us about electoral realignment?
New publication with @dpzollinger.bsky.social and Tabea Palmtag out now in the Journal of European Public Policy 😊
doi.org/10.1080/1350...
🍋 18.3
Who gets what? 🎁
@elisadeisshelbig.bsky.social, @iguinaudeau.bsky.social & @theresmatthiess.bsky.social question which social groups are viewed as deserving of beneficial policy, using French and German survey data, to find that divides create incentive for competition 🥈
buff.ly/wpDYJE3
📰 Le scrutin majoritaire en France a perdu ses principales justifications : dégager une majorité de gouvernement et clarifier les responsabilités.
Dans la revue Conférence, @iguinaudeau.bsky.social & @egrossman.bsky.social montrent que la proportionnelle apporterait plus de cohérence démocratique.
💫 New paper!
@elisadeisshelbig.bsky.social, @theresmatthiess.bsky.social
& I are happy to see our new paper published in open access with the @ejprjournal.bsky.social
Do group-targeted campaign pledges pay off electorally?
We test this with a preregistered survey experiment in Germany.
New paper out in the @thejop.bsky.social (w/ @christinagahn.bsky.social)
Do opinion polls shape election results?
Using both cross-national data and a survey experiment, the answer we find is yes - though it depends on how we communicate polling results.
www.journals.uchicago.edu/doi/10.1086/...
Why? We find little evidence of a strong ingroup bonus. Instead, support drops among outgroups: voters who are not part of the targeted group, do not identify with it, or see it as less deserving.
Parties increasingly promise benefits to specific groups, (parents, pensioners, rural residents...) This may make promised benefits more visible, concrete and personally relevant – and thus mobilize beneficiaries more effectively.
🚨Our article “Who deserves? Ideological gaps in citizens’ deservingness perceptions?” is out in @epsrjournal.bsky.social.
Joint work with @elisadeisshelbig.bsky.social and @iguinaudeau.bsky.social from the 🇫🇷🇩🇪 UNEQUALMAND project.
👉🏻 shorturl.at/qoBDU%F0%9F%...
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📣 Call for papers!
Final UNEQUALMAND workshop on social groups, mandate responsiveness & political (in)equality
📍 Sciences Po, Paris
📅 24–25 Sept 2026
🏫 Lodging
🚅 Travel≤€500
📝 Proposals due 31 May
Details: lnkd.in/gjXsmb7y
With @elisadeisshelbig.bsky.social and @theresmatthiess.bsky.social
📣 Call for papers!
Final UNEQUALMAND workshop on social groups, mandate responsiveness & political (in)equality
📍 Sciences Po, Paris
📅 24–25 Sept 2026
🏫 Lodging
🚅 Travel≤€500
📝 Proposals due 31 May
Details: lnkd.in/gjXsmb7y
With @elisadeisshelbig.bsky.social and @theresmatthiess.bsky.social
NEW -
Who Do Parties Speak To? Introducing the PSoGA: A New Comprehensive Database of Parties’ Social Group Appeals https://cup.org/43fmXFj
- @alonadolinsky.com, @lenamariahuber.bsky.social & @rwillh11.bsky.social#FirstView
Pas de majorité stable, et une représentation déformée du vote des Français.
Il est temps de corriger le système.
C’est le sens de notre initiative transpartisane sur la proportionnelle aux législatives avec @g-gouffiervalente.bsky.social@erwanbalanant.bsky.social & Marie Recalde 🗳️ ⬇️
A reminder that applications for this 3-year fully funded PhD position close at the end of next week (May 17).
This is a great opportunity to work on climate politics comparative politics in a vibrant environment, with loads of freedom to develop your own project.
www.sciencespo.fr/centre-etude...
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
The main obstacles are thus political: sticky prejudices about proportional representation, self-preserving reflexes among politicians elected under current rules, and the short-sighted belief that the majoritarian system might eventually deliver an absolute majority to one’s own camp.
But it was striking yesterday to see the breadth of the coalition behind the discussion. The event was initiated by MPs from four different parliamentary families and involved one former President and two former Prime ministers from different parties. Something is clearly moving 👀
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
A proportional system would not magically create a culture of compromise. But it would reduce our current reliance on barrage voting, clarify electoral outcomes and help making governments more broadly representative – and therefore more legitimate and able to govern.
This does not mean that reform is imminent, but the obstacle is not constitutional: the electoral system is not entrenched in the Constitution and can be changed by ordinary law.
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
… yet the system no longer reliably delivers what was supposed to justify these costs: stable majorities, clear mandates, and effective government. Governments are increasingly unstable and incapable of governing.
Pre-electoral alliances (vital to survive in the current system) trap parties in bloc-based strategies that are very costly to revise post-election and hinder the search for majorities. At the same time, the “victories” produced by tactical withdrawals and barrage voting remain deeply ambiguous.
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
The current system increasingly combines the worst of both worlds: highly disproportional results (parties have been able to win absolute majorities with less than 1/3 of first-round votes), huge shares of votes not translated in any form of representation...
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
What struck me most was that the debate has moved forward: proportional representation is no longer discussed as a mere abstract or value-based choice. The debate has become more precise: which electoral system could help France move out of the current crisis?
A cross-party bill proposes to introduce a mixed compensatory system for legislative elections (inspired by the German and NZ models): this would keep 577 MPs, 347 elected in single-member constituencies and 230 elected from national compensatory lists.
www.assemblee-nationale.fr/dyn/17/dossi...
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
This is politically dangerous.
The more voters feel that their strategic mobilisation is misread, the greater the risk that they end up abstaining or refusing to contribute to the “barrage” next time. The far right may then not even need to convince a majority.
This is the broader context in which I took part yesterday in a cross-party conference at the French National Assembly on electoral reform: “Proportional representation: the ballot is open.”
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
The perspective of 2027 makes this pressing. If the far right is once again in a position to win many 2nd-round contests, preventing the majoritarian system from amplifying its support will rely on “barrage” voting: voters mobilising not for their preferred candidate, but against RN.
How long will the barrage hold? It repeatedly asks citizens to support candidates they may dislike and who may later behave as if they had received a positive mandate to implement their programme.
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
The 2026 budget, in particular, could only be adopted through the use of Article 49.3, a constitutional device that allows the government to pass a bill unless a no-confidence motion succeeds, i.e. without a vote.
But relying on 49.3 to govern is not a viable perspective given the way this nourishes already huge political frustrations: www.tandfonline.com/doi/abs/10.1...
Can France still be governed under its current electoral system?
After almost two years of parliamentary fragmentation, the situation remains unsettled: huge frustration, no stable majority and a presidential election already casting its polarising shadow over parliamentary life.
In theory, the current parliamentary fragmentation should encourage negotiations to construct majorities. But institutions, electoral incentives and political habits keep pushing parties to behave as if unilateral government remained possible.
Many thanks to the @mzesunimannheim.bsky.social for the invitation to present our new experiment with @elisadeisshelbig.bsky.social and @theresmatthiess.bsky.social next Tuesday! I really look forward to the discussion 👀 Please let me know if you are in Mannheim and would like to meet.
❗️ Tue, May 5, 12:15-13:30 CET
📍 A 231 and ZOOM
MZES Speaker Series
with
@iguinaudeau.bsky.social
"Wallets, Redistribution, and Vote Choice: Experimental Evidence from Germany"
👉 www.mzes.uni-mannheim.de/en/news/even...
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For months, Germany has been controversially debating the return of military conscription. But who actually supports it? And more importantly, why? Here are some insights based on a representative survey from last autumn. A thread 🧵
www.bbc.com/news/article...
Chères·chers collègues enseignant·es en français, pour un cours de 1ère année portant sur les systèmes politiques, je suis à la recherche d’un manuel en français. Est-ce que quelqu’un aurait la gentillesse de partager une suggestion ? Merci bcp ! @iguinaudeau.bsky.social@fredericmerand.bsky.social
🚨Job alert 🚨
I have an opening for a postdoc in my team at @ipz.bsky.social in the area of digital democracy starting Sep 1, 2026.
If you are working on the impact of the digital transformation on politics, please apply by 🗓️ Mar 1, 2026.
📤 Please share widely!
www.ipz.uzh.ch/de/ueber-uns...
Liebe Survey-Erfahrene in 🇩🇪, @elisadeisshelbig.bsky.social, @theresmatthiess.bsky.social und ich hätten Fragen an Euch 🤓
1) Gibt es Bedenken gegen die Erhebung von PLZ oder Gemeinde, um lokale soz.-ökon. Indikatoren zu mergen?
2) Kennt Ihr gute Datensätze auf PLZ-/Gemeindeebene?
🙏 🙏 🙏
Today in @theguardian.com, I argue that Donald Trump’s foreign-policy playbook is increasingly about attention capture, or what I call geopolitical clickbait.
Plus I outline why this matters for Europe & what to do about it.
🧵
www.theguardian.com/commentisfre...
Over the past couple days I have seen so many accounts that *never* post anything political, speak out against ICE. I sincerely hope Dem leaders don’t let up. This momentum is everything.