Piotr Zagórski

@pzag.bsky.social

Political scientist @SWPSUniversity @UAM_Madrid @UCBerkeley Polish National Election Study / Electoral behavior / Central & Eastern Europe / populism / historical legacies / Spain / Poland

🇵🇱⚖️Today ECtHR issued a judgment which proves that the mills of justice grind slowly and well, sometimes very slowly, and there's no wisdom coming out of that. A Polish rule of law story on judicial appointments ... but it's from ... 2008, back when I was still a wee little student of law. 1/

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📚 Nueva iniciativa del Departamento @UAM_Madrid Arranca el Seminario de Investigación (Primavera 2026) (coord. S. Pérez-Nievas) 📅 Jueves 30 abril: M. Martínez-Bascuñán 📖 Presenta el libro: F. Vallespín ➡️ 14 mayo (R. Navarrete) ➡️ 28 mayo (L. Bouza) 📍 Facultad de Derecho UAM

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V-Dem v.16 is now released, w. updated scores for 2025. Most countries remain stable from 2024, but some clear improvements (on diff’t democracy indices), incl. S. Korea, Sri Lanka & Mauritius. Largest declines came, by far, in the US. This figure shows 10-yr changes on the Liberal Dem. index.

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A new paper shows that less than 2 months of exposure to Twitter’s algorithmic feed significantly shifts people’s political views to the right. Moving from chronological feed to the algorithmic feed also increases engagement. This is one of the most concerning papers I’ve read in awhile.

The political effects of X's feed algorithm
https://doi.org/10.1038/s41586-026-10098-2
Received: 16 December 2024
Accepted: 4 January 2026
Published online: 18 February 2026
Open access
• Check for updates
Germain Gauthier,5, Roland Hodler?5, Philine Widmer35 & Ekaterina Zhuravskaya3,4,5 m
Feed algorithms are widely suspected to influence political attitudes. However, previous evidence from switching off the algorithm on Meta platforms found no political effects'. Here we present results from a 2023 field experiment on Elon Musk's platform X shedding light on this puzzle. We assigned active US-based users randomly to either an algorithmic or a chronological feed for 7 weeks, measuring political attitudes and online behaviour. Switching from a chronological to an algorithmic feed increased engagement and shifted political opinion towards more conservative positions, particularly regarding policy priorities, perceptions of criminal investigations into Donald Trump and views on the war in Ukraine. In contrast, switching from the algorithmic to the chronological feed had no comparable effects.
Neither switching the algorithm on nor switching it off significantly affected affective polarization or self-reported partisanship. To investigate the mechanism, we analysed users' feed content and behaviour. We found that the algorithm promotes conservative content and demotes posts by traditional media. Exposure to algorithmic content leads users to follow conservative political activist accounts, which they continue to follow even after switching off the algorithm, helping explain the asymmetry in effects. These results suggest that initial exposure to X's algorithm has persistent effects on users' current political attitudes and account-following behaviour, even in the absence of a detectable effect on partisanship.

🇵🇱⚖️President Nawrocki vetoes the law reforming the National Council of Judiciary, dispelling any hopes the Polish government had of reforming the rule of law through new legislation. Major, but expected, defeat for the new MoJ Waldemark Żurek and his plans. 1/

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🇵🇱⚖️I promised a banger on the rule-of-law crisis in Poland, so... here it is. A group of PiS MPs have lodged a case with the Constitutional Tribunal, asking it to find the rules of electing the judges of the same Tribunal, introduced in 2016 by a PiS majority, to be unconstitutional. 1/

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☀️☀️ Exciting news in Madrid! We are VERY happy to officially announce the creation of the Instituto Juan Linz (aka “IJL”). ijlinz.es The IJL ("Juan Linz Institute" in English) is dedicated to cutting-edge research and teaching in political science, sociology, economic history and more. thread 1/12

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Political scientists see non-violent resistance as much more effective--and it's not just from aggregate statistics. Rather, it's the way that peaceful resistance undermines the state's repressive capacities. This op-ed by Berkeley prof @owasow.bsky.social explains this logic 🎯. Give it a read!

Omar Wasow@owasow.bsky.social · 6mo ago

“What we are seeing is the weakness of strong states. Regimes that rely on repression face a challenge: The more force they deploy, the more they risk exposing their own brutality to politically persuadable observers. Overreach doesn’t just project strength; it also undermines legitimacy.” Gift link