Personal profile
Personal profile
Andreu Casas is an Associate Professor in Political Communication at Royal Holloway University of London in the Department of Politics, International Relations and Philosophy. He is also a UKRI Future Leaders Fellow and the Director of the London Social Media Observatory; and a Faculty Associate in the Center for Social Media, AI and Politics at New York University. He received his PhD in Political Science from the University of Washington . Before joining Royal Holloway, he was an assistant professor at VU Amsterdam, and a Moore Sloan research fellow in the Center for Data Science and Center for Social Media and Politics at the New York University; and a research fellow at the Amsterdam School of Communication Research.
Dr. Casas is a computational political scientist working on political communication, public policy, legislative politics, and computational methods. His substantive research focuses on building a better understanding of the policymaking process, broadly speaking, in the current digital society. His research in political communication and public policy looks at how social media has shaped collective action dynamics; how social movements, interest groups, political parties, as well as the public, use public communications to influence the political agenda; the role of (social) media in increasing/ameliorating polarization; and the regulation of political speech by social media companies. His research on legislative politics looks at the conditions under which individual legislators and legislative groups influence policy through less prominent (e.g. amendments) and more informal (e.g. bundling legislation) mechanisms. In addition, in all his research Dr. Casas develops and/or applies novel computational methods (text-as-data and images-as-data) that allow him to unlock important (classic and new) research questions that would not be able to address otherwise.
Dr. Casas' work as been published in top academic outlets such as Science Advances, American Political Science Review, American Journal of Political Science, Journal of Politics, Annual Review of Political Science, Political Analysis, etc., and a book with Cambridge University Press. His research has been funded by many organisations, such as the European Research Council, NWO, NSF, Facebook, and La Caixa Foundation. Currently, he is the PI of a NWO-VENI grant exploring political biases in the moderation of political content on social media platforms (or the lack therof), and the PI of a work package in the WHAT-IF project funded by Horizon Europe.
Education/Academic qualification
Political Science, PhD, University of Washington, Seattle
Aug 2013 → Jun 2018
Award Date: 18 Jun 2018
Keywords
- Politics
- Political Communication
- Public Policy
- Computational Social Sciences
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being
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SDG 10 Reduced Inequalities
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SDG 16 Peace, Justice and Strong Institutions
Collaborations and top research areas from the last five years
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Academic Access to Social Media Data for the Study of Political Online Safety
Casas Salleras, A., Dagher, G. & O'Loughlin, B., 17 Jan 2025, 64 p. SocArXiv.Research output: Other contribution
Open Access -
Bottom Up? Top Down? Determinants of Issue-Attention in State Politics
Casas Salleras, A., Stuhler, O., Payson, J., Tucker, J., Bonneau, R. & Nagler, J., 21 Mar 2025, (Accepted/In press) In: The Journal of Politics.Research output: Contribution to journal › Article › peer-review
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Debate: How do we get platforms to share data with independent researchers? Regulation alone won’t cut it. a commentary on Livingston et al. (2023), Bourgaize et al. (2025)
Casas Salleras, A., Dagher, G. & O'Loughlin, B., Sept 2025, In: Child and Adolescent Mental Health. 30, 3, p. 289-291 3 p.Research output: Contribution to journal › Article › peer-review
Open Access -
When Conservatives See Red but Liberals Feel Blue: Labeler Characteristics and Variation in Content Annotation
Webb Williams, N., Casas , A., Aslett, K. & Wilkerson, J., 17 Dec 2025, (E-pub ahead of print) In: The Journal of Politics.Research output: Contribution to journal › Article › peer-review
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Less annotating, more classifying: Addressing the data scarcity issue of supervised machine learning with deep transfer learning and BERT-NLI
Laurer, M., van Atteveldt, W., Casas, A. & Welbers, K., Jan 2024, In: Political Analysis. 32, 1, p. 84-100 17 p.Research output: Contribution to journal › Article › peer-review
Open Access
Projects
- 3 Active
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The Social Media Observatory at Royal Holloway
Casas Salleras, A. (PI)
UK Research and Innovation UKRI
1/12/25 → 30/11/29
Project: Research
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WHAT-IF: Simulating (Social) Media Information Environments to Study Democratic Citizenship
Casas Salleras, A. (PI)
1/01/25 → 31/12/26
Project: Research
Activities
- 10 Invited talk
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Moderation of Political Content on Youtube during the 2024 US Election”
Casas Salleras, A. (Speaker)
21 Oct 2024Activity: Talk, presentation or media contribution › Invited talk
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Moderation of Political Content on Youtube during the 2024 US Election
Casas Salleras, A. (Speaker)
8 May 2024Activity: Talk, presentation or media contribution › Invited talk
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Exploring Ideological Biases in Content Moderation on YouTube in the United States”
Casas Salleras, A. (Speaker)
18 Oct 2023Activity: Talk, presentation or media contribution › Invited talk
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Impact of the Internet on democracy: positive tool or polarising force?
Casas Salleras, A. (Speaker)
26 Sept 2023Activity: Talk, presentation or media contribution › Invited talk
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The Geopolitics of Deplatforming: A Study of Suspensions of Politically-Interested Iranian Accounts on Twitter
Casas Salleras, A. (Speaker)
9 Mar 2023Activity: Talk, presentation or media contribution › Invited talk