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Jelle Koedam

@jellekoedam.bsky.social

3K followers 600 following 28 posts

Political Scientist @ University of Zurich | PhD UNC Chapel Hill | Research on polarization, multidimensionality, European politics

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

How should we study party polarization in Europe?

Happy to share that our paper on *multidimensional* polarization is now out @bjpols.bsky.social! (more 👇)

British Journal of Political Science @bjpols.bsky.social · Feb 19

NEW -

Multidimensional Party Polarization in Europe: Cross-Cutting Divides and Effective Dimensionality - cup.org/4gLJspU

- @jellekoedam.bsky.social, Garret Binding & @mrsteenbergen.bsky.social

BJPolS abstract discussing the impact of ideological polarization on democratic functions, proposing a new measurement model to address diversity polarization, focusing on multiclass classification of partisan positions.

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Jelle Koedam @jellekoedam.bsky.social · 15d

Congrats, Theresa! That's amazing! 🎉

Jelle Koedam @jellekoedam.bsky.social · 19d

Wat mooi! Gefeliciteerd, Sarah!

Reposted by Jelle Koedam

Sarah Engler @saengler.bsky.social · Jul 21

Really happy to see my work with @dweisstanner.bsky.social published with @bjpols.bsky.social. In this letter, we look at symbolic class signalling through cultural consumption and how effective it is across voters of different parties.

A thread 👇 (1/n)

#OpenAccess - cup.org/3GSCIKV

The Electoral Appeal of Symbolic Class Signalling Through Cultural Consumption | British Journal of Political Science | Cambridge Core

The Electoral Appeal of Symbolic Class Signalling Through Cultural Consumption - Volume 55

cup.org

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Reposted by Jelle Koedam

Giorgio Malet @giorgiomalet.bsky.social · Jul 4

Together with @jellekoedam.bsky.social, @tinepaulsen.bsky.social, and @nicolaiberk.bsky.social, we brought together an amazing group of researchers doing exciting work here in Zurich — and it turned into a super fun, engaging workshop. Huge thanks to everyone who joined and made it so special!

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Jelle Koedam @jellekoedam.bsky.social · Jul 1

Gefeliciteerd, Gijs! 🎉

Jelle Koedam @jellekoedam.bsky.social · Jun 16

Congratulations on two huge milestones, Tadeas! 🎉

Jelle Koedam @jellekoedam.bsky.social · Apr 17

Gefeliciteerd, Maurits! Exciting times ahead!

Jelle Koedam @jellekoedam.bsky.social · Mar 17

Congrats, Tadeas! 🎉

Jelle Koedam @jellekoedam.bsky.social · Mar 3

Thank you, Tadeas! Glad you find it helpful :)

Jelle Koedam @jellekoedam.bsky.social · Feb 27

Thanks, Seth! 🙏

Reposted by Jelle Koedam

Jelle Koedam @jellekoedam.bsky.social · Feb 26

How should we study party polarization in Europe?

Happy to share that our paper on *multidimensional* polarization is now out @bjpols.bsky.social! (more 👇)

British Journal of Political Science @bjpols.bsky.social · Feb 19

NEW -

Multidimensional Party Polarization in Europe: Cross-Cutting Divides and Effective Dimensionality - cup.org/4gLJspU

- @jellekoedam.bsky.social, Garret Binding & @mrsteenbergen.bsky.social

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

Thank you for sharing!

Jelle Koedam @jellekoedam.bsky.social · Feb 26

Thanks so much, Ana!

Jelle Koedam @jellekoedam.bsky.social · Feb 26

Thank you for sharing, Alina!

Jelle Koedam @jellekoedam.bsky.social · Feb 26

Paper is part of my @snsf-ch.bsky.social Ambizione

More to come soon, including code to easily use our measures yourself!

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

Using @chesdata.bsky.social and @cses.bsky.social data, we demonstrate the value of our multidimensional approach and its ability to better predict mass partisanship

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

We introduce the *effective dimensionality* of a political space, and use it to analyze multidimensional polarization

✅ Simple, intuitive, and easily extended to any type or number of dimensions

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

Main point 🎯

-- Dimensions can collapse into 1D polarization (see PT)
-- Dimensions can be orthogonal and produce 2D polarization (see NL)

🚨 Reinforcing vs. cross-cutting polarization have different consequences for democracy!

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

⚠️ Left vs. right polarization frequently underestimates party differences, especially on cultural issues

⚠️ Summing up individual polarization scores assumes dimensional independence

➡️ We need an alternative approach!

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

We argue that left vs. right polarization is ill-suited to capture contemporary party conflict

European party systems are complex, fragmented, and structured by multiple ideological divides (e.g., economic + cultural)

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Jelle Koedam @jellekoedam.bsky.social · Feb 26

How should we study party polarization in Europe?

Happy to share that our paper on *multidimensional* polarization is now out @bjpols.bsky.social! (more 👇)

British Journal of Political Science @bjpols.bsky.social · Feb 19

NEW -

Multidimensional Party Polarization in Europe: Cross-Cutting Divides and Effective Dimensionality - cup.org/4gLJspU

- @jellekoedam.bsky.social, Garret Binding & @mrsteenbergen.bsky.social

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Jelle Koedam @jellekoedam.bsky.social · Feb 22

Congratulations, Zeynep! 🎉

Reposted by Jelle Koedam

Jonathan Polk @jonathanpolk.bsky.social · Feb 21

I am looking to hire a post-doctoral researcher to work with me in a project on social cleavages and political party competition in Europe:
lu.varbi.com/en/what:job/...
Happy to answer any questions, and thanks in advance for circulating the call!

Postdoctoral fellow in political science: party competition in Europe

Are you our next postdoc with a focus on using expert surveys to examine political party competition around cleavage politics? The Department of Political Science invites applications for a 2-year pos

lu.varbi.com

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Reposted by Jelle Koedam

Chapel Hill Expert Survey @chesdata.bsky.social · Feb 20

Check out the latest addition to the CHES family, CHES-Canada 2023: www.chesdata.eu/chescanada

Thanks to @jellekoedam.bsky.social & @rdassonneville.bsky.social for their work on this project!

More news to follow soon on CHES-Europe 2024!

CHES-Canada — Chapel Hill Expert Survey

www.chesdata.eu

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Reposted by Jelle Koedam

Ruth Dassonneville @rdassonneville.bsky.social · Feb 20

‼️ O, Canada is now in CHES!

The data include party position estimates for federal parties in Canada + parties in Ontario and Quebec. It's also super easy to combine with other @chesdata.bsky.social data to compare positions with positions of parties in other countries!

Chapel Hill Expert Survey @chesdata.bsky.social · Feb 20

CHES-Canada — Chapel Hill Expert Survey

www.chesdata.eu

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