Romain Lachat's Avatar

Romain Lachat

@rlachat

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

1,580
Followers
683
Following
32
Posts
06.10.2023
Joined
Posts Following

Latest posts by Romain Lachat @rlachat

Post image

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

29.01.2026 16:16 ๐Ÿ‘ 24 ๐Ÿ” 6 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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.

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.

NEW -

Quality Not Quantity: How a VAA Affected Voting Behavior in Three Large-Scale Field Experiments - https://cup.org/491pwNQ

- @fresejoris.bsky.social, @simonhix.bsky.social & @rlachat.bsky.social

#OpenAccess

18.12.2025 11:50 ๐Ÿ‘ 11 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image Post image

๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡ฉ๐Ÿ‡ช Published Today in @bjpols.bsky.social ๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ‡ซ๐Ÿ‡ท

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 ๐Ÿ‘‡ 1/14

18.12.2025 11:40 ๐Ÿ‘ 84 ๐Ÿ” 32 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 0
Post image

๐Ÿ“ฃ AUTHLIB Final Conference

๐Ÿ—บ๏ธ Mapping the Illiberal Challenge: Patterns, Drivers, Consequences
๐Ÿ“… Jan 8โ€“9, 2026
๐Ÿ“ @weareceu.bsky.social, Budapest

Two days on illiberalism, democracy & democratic responses.

๐Ÿ‘‰ Register today to secure your spot: www.authlib.eu/authlib-fina...

15.12.2025 09:56 ๐Ÿ‘ 3 ๐Ÿ” 7 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 3
Post image

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

09.10.2025 07:44 ๐Ÿ‘ 63 ๐Ÿ” 15 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Thanks to @fondationmsh.bsky.social and @cerium-udem.bsky.social for making this possible, to our guest speakers: @vinarceneaux.bsky.social @florianfoos.bsky.social @sldelange.bsky.social @simonchauchard.bsky.social @jrovny.bsky.social, and to @rdassonneville.bsky.social for the co-organization

05.07.2025 15:38 ๐Ÿ‘ 14 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

@bogatyrev.bsky.social @leonhardschmidt.bsky.social @ludwigschulze.bsky.social @mzuquete.bsky.social @ojrj.bsky.social @pablogg.es @piotrmarczynski.bsky.social @yaseminsivri.bsky.social

05.07.2025 15:38 ๐Ÿ‘ 11 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Post image

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

05.07.2025 15:38 ๐Ÿ‘ 37 ๐Ÿ” 4 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 8
Post image

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

05.07.2025 09:16 ๐Ÿ‘ 29 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

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

04.07.2025 11:55 ๐Ÿ‘ 18 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

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!

04.07.2025 11:37 ๐Ÿ‘ 21 ๐Ÿ” 5 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Post image

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

03.07.2025 14:11 ๐Ÿ‘ 32 ๐Ÿ” 7 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

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 !

03.07.2025 09:24 ๐Ÿ‘ 18 ๐Ÿ” 27 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 2
Post image

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

02.07.2025 14:02 ๐Ÿ‘ 20 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
Post image

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

01.07.2025 11:45 ๐Ÿ‘ 20 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

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

01.07.2025 06:56 ๐Ÿ‘ 35 ๐Ÿ” 7 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
Preview
2 PhD positions in Electoral behavior 2 PhD positions to research how social group memberships become connected to vote choices

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 ๐Ÿ‘‰ www.kuleuven.be/personeel/jo...

Please share with interested students who would like to move to beautiful Leuven!

03.06.2025 07:35 ๐Ÿ‘ 80 ๐Ÿ” 91 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 3
Preview
The Kleptocracy Presidency Under Trump, conflicts of interest are just part of the system.

"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...

14.04.2025 10:58 ๐Ÿ‘ 2052 ๐Ÿ” 716 ๐Ÿ’ฌ 67 ๐Ÿ“Œ 56
Preview
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

โ€œeven if [Europeans] cannot stop the attacks on US academia, different groups can help US-based academics in other ways.โ€

My new op-Ed in @theguardian.com

07.04.2025 10:56 ๐Ÿ‘ 56 ๐Ÿ” 27 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 5
Post image

Published Today in PSRM:

Based on a novel โ€œMultiple Unexpected Events during Survey Designโ€ (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

20.03.2025 10:24 ๐Ÿ‘ 104 ๐Ÿ” 40 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 5

๐Ÿฆ‹ Welcome to our new followers!

You can find here the starter pack gathering our members present on Bluesky.

Go follow them โฌ

go.bsky.app/EBRGCLH

19.03.2025 10:52 ๐Ÿ‘ 3 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

Lโ€™Europe veut rรฉarmer - ยฉ Chappatte dans Le Temps, Genรจve ๐Ÿ‘‰ www.chappatte.com/fr/images/le...

09.03.2025 09:40 ๐Ÿ‘ 33 ๐Ÿ” 10 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
Post image

Zelensky in the crossfire - ยฉ Chappatte in NZZ am Sonntag, Zรผrich ๐Ÿ‘‰ www.chappatte.com/en/images/ze...

09.03.2025 09:40 ๐Ÿ‘ 119 ๐Ÿ” 40 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 3
Preview
Vu parโ€ฆ Chappatte CARTE BLANCHE. Le dessin paru en une du ยซย Mondeย ยป le 4 mars est signรฉ par le dessinateur suisse, membre de lโ€™association Cartooning for Peace.

[LE MONDE]
ร€ la une du journal @lemonde.fr aujourdโ€™hui, un dessin par @chappatte.bsky.social (Suisse) : www.lemonde.fr/idees/articl...

04.03.2025 16:40 ๐Ÿ‘ 31 ๐Ÿ” 10 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 2

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:

02.03.2025 12:50 ๐Ÿ‘ 538 ๐Ÿ” 127 ๐Ÿ’ฌ 17 ๐Ÿ“Œ 15
Post image

BUNDESTAGSWAHL | 18 Uhr Prognose Forschungsgruppe Wahlen/ZDF

Union: 28,5% (+4,4)
AfD: 20,0% (+9,7)
SPD: 16,5% (-9,2)
GRรœNE: 12,0% (-2,8)
LINKE: 9,0% (+4,1)
FDP: 5,0% (-6,5)
BSW: 5,0% (NEU)
Sonstige: 4,0% (-4,7)

ร„nderungen zum Wahlergebnis von 2021

#Bundestagswahl2025 #btw25

23.02.2025 17:04 ๐Ÿ‘ 22 ๐Ÿ” 11 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 6
Preview
ยซย Donald Trump et Elon Musk plongent la science amรฉricaine dans un indescriptible chaosย ยป CHRONIQUE. En supprimant des dizaines de milliers dโ€™emplois et en coupant les financements des recherches quโ€™ils accusent de ยซย wokismeย ยป, le prรฉsident des Etats-Unis et le milliardaire mรจnent une atta...

Lโ€™administration Trump met "en ล“uvre une politique qui vise ร  dรฉtruire les instruments permettant de produire des รฉnoncรฉs objectifs. Faire disparaรฎtre la rรฉalitรฉ pour ne plus laisser les faits porter prรฉjudice ร  la volontรฉ du chef : cโ€™est exactement ce que lโ€™on attend dโ€™une politique fasciste."

23.02.2025 09:22 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
A Sad Moment in American History
A Sad Moment in American History YouTube video by Senator Bernie Sanders

www.youtube.com/watch?v=rKBM...

20.02.2025 07:31 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0