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Kai Arzheimer

@kaiarzheimer@fediscience.org

Professor of Politics @PoWiMZ / @uni_mainz | parties, elections, attitudes, behaviour | right-wing extremism/populism/radicalism

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23 Posts

Joined November 04, 2022

Bluesky:

https://bsky.app/profile/kai-arzheimer.com

Web:

https://www.kai-arzheimer.com/

Google Scholar:

https://scholar.google.com/citations?user=sq2lFhsAAAAJ&hl=en

Lab:

https://german.politics.uni-mainz.de/

Posts

Kai Arzheimer @kaiarzheimer@fediscience.org · Jun 30, 2026

In 2024, German political science got very excited when #BSW seemed able to tap into that fable left-wing authoritarian potential. Two years down the line, their polling is flatlining, and they are asking the #AfD to hold joint campaign events. Are they (gasps) just plain authoritarian after all? https://taz.de/BSW-Brief-an-die-AfD/!6192077/

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Kai Arzheimer @kaiarzheimer@fediscience.org · Jun 22, 2026

Free author's version: definitions are superfluous when it comes to the far/radical/extreme/populist/new right. https://www.kai-arzheimer.com/clearly-defined-concepts-are-overrated-the-strange-case-of-european-radical-right-studies/

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Kai Arzheimer @kaiarzheimer@fediscience.org · Jun 15, 2026

Recall when offprints were a symbol of academic honour? Explore the nostalgia of sharing research before the digital age. 🌐📚 #Throbbackpost https://www.kai-arzheimer.com/in-a-land-before-time-offprints/

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Kai Arzheimer @kaiarzheimer@fediscience.org · May 03, 2026

Refrain from engaging with the internet troll #throwbackpost
https://www.kai-arzheimer.com/dont-feed-the-troll/

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 29, 2026

Neat summary, eh? #AcademicChatter

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 27, 2026

Sad but true

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

This reflects unmodelled structural differences, such as regional political cultures & identities, but also organisational strength and social embeddedness of parties. If you are interested in German Politics and/or political behaviour & regionalisation, find the full pre-print here 👇 https://www.kai-arzheimer.com/paper/germany-regional-sorting-polarisation/

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

... region is still an important factor in the micro model. This figure shows how it affects each party’s fortunes (controlling for ideology and socio-demographics), compared to the old west. See e.g. that the Christian Democrats are doing much worse in the city states & the old East (but Bavaria!)

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

E.g. the lower-right panel shows the role of nativism for the AfD vote: support for the party is almost nonexistent amongst voters with liberal or even centrist positions, while the majority of those with very nativist positions vote for the #AfD. The rest is left as an exercise for the reader. But…

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

Do these differences stem from (self-)sorting and regional polarisation? Partly. Once I control for individual socio-demographics and attitudes, urbanisation becomes irrelevant. The effects of ideology are very strong & would warrant a separate paper.

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

Regression confirms this intuition: very densely populated constituencies are very unusual, but so are very rural ones. In sum, it makes most sense to distinguish between 𝘧𝘰𝘶𝘳 groups of territories with distinct profiles: the city states, the former GDR outside Berlin, Bavaria, and all the rest.

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

... the two macro regions are not internally homogeneous. Each square on this map represents a constituency. Squares are shaded according to how much the local result differs from the national average. The former GDR stands out, but so do large parts of Bavaria and various urban centres.

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

Replying to @kaiarzheimer@fediscience.org

More specifically, aggregate volatility (the lower bound for individual changes in voting behaviour) in the eastern/western macro regions was higher than at any point in German post-war history, which pushed the two results further apart than they've ever been since 1990. But ackchyually ....

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 25, 2026

I have a new chapter on regional differences in German voting behaviour (beyond east/west). It's coming out later this year, but with attention spans being what they are, here's a 🧵. Most important point: aggregate volatility and east-west-diffs (yeah) were, like, absolutely massive in 2025 #btw25

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Kai Arzheimer @kaiarzheimer@fediscience.org · Apr 20, 2026

One for my friends in #philosophy #AcademicChatter

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Kai Arzheimer @kaiarzheimer@fediscience.org · Mar 13, 2026

"Painfully accurate" #AcademicWriting #AcademicChatter

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Kai Arzheimer @kaiarzheimer@fediscience.org · Mar 11, 2026

#AcademicChatter

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Kai Arzheimer @kaiarzheimer@fediscience.org · Feb 26, 2026

Students be like

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Kai Arzheimer @kaiarzheimer@fediscience.org · Aug 01, 2025

Hey, this is not even a joke #AcademicWriting #AcademicChatter

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Kai Arzheimer @kaiarzheimer@fediscience.org · Feb 05, 2025

I swear this 𝗻𝗲𝘃𝗲𝗿 happens in our lab #AcademicChatter

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Kai Arzheimer @kaiarzheimer@fediscience.org · Nov 13, 2023

This looks very interesting and confirms the intuitions of anyone who has ever heard about agenda setting and the effects of elite rhetoric. Will not prevent mainstream politicians from being stupid. Extra points (from a certain demographic) for the title.
http://idw-online.de/de/news823640

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Kai Arzheimer @kaiarzheimer@fediscience.org · Nov 07, 2023

Meanwhile in #Germany: intelligence service designates the Saxony-Anhalt chapter of the far-right #AfD as an extremist ('gesichert rechtsextrem') organisation, which warrants covert observation of functionaries and all that. The party is likely to challenge that in the courts
https://www.dw.com/de/afd-sachsen-anhalt-als-gesichert-rechtsextrem-eingestuft/a-67335025

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Kai Arzheimer @kaiarzheimer@fediscience.org · Dec 10, 2022

Top tip for academic recommendation letter writing: the machine can do it for you https://www.kai-arzheimer.com/top-tip-for-academic-recommendation-letter-writing-the-machine-can-do-it-for-you/ #AcademicChatter

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