Ongoing Research


New! Einstein Research Unit “Coping with Affective Polarization”

We feel close to like-minded individuals and distance ourselves from those with different views, a phenomenon referred to as "affective" or "group-based" polarization. Affective polarization can hinder cooperation and compromise, foster intolerance, and even fuel hate speech and violence. The Research Unit explores the interconnections between polarization, social cohesion, and democracy. How can we, as a society, address this form of polarization, and how can we mitigate its negative consequences?

I lead the Berlin Polarization Monitor, whose aim it is to identify issues that are currently polarizing or could lead to social conflicts in the future. The tool will also allow researchers to track the evolution of polarization over time.

The project is funded by the BUA and the Einstein Foundation with 4 million euros.

with Swen Hutter, Jule Specht, Christian von Scheve, Luke Shuttleworth and Bastian Becker


Expedition Basic Income

For several years now, there have been increasing debates about the introduction of a Universal Basic Income (UBI). According to a study by the German Institute for Economic Research from 2019, around 70% of people in Germany still wish to see a UBI tested through pilot projects. Such projects are useful for addressing open questions and advancing public opinion through the campaign "Expedition Basic Income.“

In this project, we accompany scientifically the direct democratic campaign "Hamburg Tests Basic Income.“ The aim is to use conjoint analysis in several survey waves at specific milestones of the campaign to answer key questions about UBI, including its design, societal acceptance, mobilization potential, and the effectiveness of the campaign itself: How is mobilization for radical reforms achieved? How do attitudes and the salience of UBI change over time? How does the mobilization potential for UBI and its determinants change over time? What influence does the campaign (supply) have on support/rejection of UBI (demand)? Do attitudes and justifications become more coherent? Which justifications/narratives for or against UBI prevail over time?

The project is funded by the Freiburg Institute for Basic Income Research.

with Swen Hutter and Bastian Becker


Green parties and their supporters: Cucumbers or Watermelons?

This project investigates the relevance of the rise of Green parties for distributive politics in advanced democracies. We first study this question from both the supply and demand side of political competition, that is the distributive preferences of green voters and the impact of Green party government participation on distributive policy-making, namely on three dimensions of distributive policy-making: social consumption, social investment and taxation policies.

with Leonce Röth and Björn Bremer


Disentangling the modern gender vote gap – a refinement of women’s political alignment

In this project I examine women's changing political alignment in Western Europe. Have women’s policy preferences really changed or have they only switched their political affinity? Do we observe a divergent pattern of both political preferences and voting behavior among different sub-groups of female voters? Which role do parties and their programmatic orientations play in the realignment between women and parties.

By answering these questions, the project seeks to provide a comprehensive analysis of women’s political realignment by providing a refined and in-depth analysis of women’s interests and preferences and accounting for the ideological orientation of parties. First, I study whether the gender vote gap is accompanied by a corresponding gender preferences gap that explains the link between women and parties. Second, I disaggregate the analysis political orientation by taking into account the household or family constellation. Third, I integrate the supply side of political competition, i.e. parties and their ideological orientation, into the study of women’s political realignment.



Completed Projects


Social Cohesion and Civil Society. Interaction Dynamics in Times of Disruption (2020-2023)

How, and under what conditions, do civil society actors engage in interactions that foster or break cohesion? The initiative’s aim is to investigate cohesion as driven by, and constantly negotiated in social interaction. It considers cohesion not just as a normative ideal, but as a property of social relations and interactions across multiple scales and modalities, unfolding in face-to-face encounters, groups, and society at large. We will develop a new conflict and interaction-based theory of cohesion in contemporary society, integrating perspectives from the social sciences, humanities, and computer science, as well as from partners in civil society and politics.

The joint project of researchers from Humboldt-Universität zu Berlin, Freie Universität Berlin and Technische Universität Berlin is funded by the Berlin University Alliance Grand Challenges: Exploration Projects Social Cohesion initiative

You find more information on the project here.


Inequality, representation and the welfare state

The increase of inequality in most advanced democracies is even more worrisome as economic inequality is related to a number of social and political disadvantages. Having worked extensively on the origins and political implications of labor market inequality, I focus now the links between economic deprivation and political inequality as well as the role of political actors in mediating this link.

For instance, I am interested in the nexus between inequality, turnout and populism. We study whether economic inequality lowers electoral participation and among which voter groups. We also study whether populist parties moderates the negative effect of inequality on voter turnout. Since populist parties seek to mobilize disadvantaged groups that are less likely to participate in elections, their success could lead to higher and less unequal turnout rates. To assess whether this holds true, we analyze a dataset encompassing data on 296 national parliamentary elections in 31 European countries between 1970 and 2016. We find that as the share of populist voters increases, the effect of inequality on electoral participation diminishes, a finding that holds for both right- and left-wing populist parties with a slightly stronger effect of right-wing populism. After the Great Recession, the effect size increases.

with Dominic Gohla and Armin Schäfer


Welfare democracies and party politics: Explaining electoral dynamics in times of changing welfare capitalism

Europe’s political landscapes are in turmoil; new radical parties challenge the established political order. The book locates Europe’s contemporary challenges within the longer economic and political trajectories of its “welfare democracies”. The book argues that it is imperative to understand the specific structures of political competition and voter–party links to make sense of the political and economic turmoil of the last decades. In four distinct European welfare democracies (Nordic, Continental, Southern and Anglo-Saxon), the political economy, the party system, and the structure of the political space are co-determined in a specific way. Accordingly, different packages of policies and politics and distinct patterns of alignment between core electoral groups and political parties exist in the four welfare democracies and shape the reactions of European welfare democracies to the current turmoil. The book provides an analytical framework that links welfare states to party systems, combining recent contributions to the comparative political economy of the welfare state and insights from party and electoral politics. It states three phenomena:

  1. Concerning electoral politics, the book identifies a certain homogenization of European party systems, the emergence of a new combination of leftist socio-economic and rightist socio-cultural positions in many parties, and, finally, the different electoral success of the radical right in the north of Europe and of the radical left in the south.
  2. The contributions to this book indicate a confluence toward renewed welfare state support among parties and voters.
  3. We find that the Europeanization of political dynamics, combined with incompatible growth models, has created pronounced European cleavages.

The volume includes contributions by Alexandre Afonso, Ben Ansell, Patrick Emmenegger, Jane Gingrich, Silja Häusermann, Torben Iversen, Philip Manow, Kimberly Morgan, Bruno Palier, Johannes Lindvall, Jon Polk, Line Rennwald, Jan Rovny, Allison Rovny, David Rueda, Hanna Schwander and David Soskice.

with Philip Manow and Bruno Palier


Effects of the Transformation of the Welfare State on Political Party Competition (2012-2015)

Because party competition is at the core of democratic politics, it is one of the principle means of establishing nation state legitimacy. But how robust is it in the contemporary, transformed state? Political party systems have been in flux since the 1970s, when the lines of conflict around which they were established began to lose their significance. The fact that this process is mediated by the welfare state has, to date, been neglected in analyses of party systems and welfare states. Research on changes in party systems often emphasizes the effects of standard long-term social trends, while neglecting the welfare state's influence on those trends. Comparative welfare state analyses, for their part, examine the role played by political parties in the development of the welfare state, but treat them as an independent variable, ignoring the effects that welfare state changes can have on the party system.

We examine how restructuring the welfare state affects social structures and electorates' party preferences, and, ultimately, party systems. We focus on the two historically most important conflicts in Western European politics: between labor and capital, and between church and state. In the first case, the shift to a service economy has generated voter blocks with new interests in labor market and public employment policy. Likewise, the waning of church-state conflict has reshuffled voter alignments and, in particular, made women's social policy concerns more relevant for party competition.

We also study the rise of the German far right party Alternative für Deutschland (AfD). We test the ‘losers of modernization’-thesis, one of the most dominant explanations for right-wing populist voting, for the case of the AfD. Based on district level data from the Federal Institute for Research on Building, Urban Affairs and Spatial Development and official data on electoral outcomes, we examine whether the socio- economic characteristics of a district yield any explanatory power for the AfD’s electoral success in the federal elections. The findings suggest that the modernization thesis bears little relevance for the success of the populist right in Germany. By contrast, we find a strong correlation between the AfD’s electoral success and the success of radical right parties in previous elections in the same district. We explain this intriguing finding with a “tradition of radical right voting” and a specific political culture on which the AfD has been able to draw once the broader political and social context allowed for the creation of a right-wing populist party in Germany.

The project was part of the CRC 597 "Transformations of the State" at the University of Bremen

with Philip Manow


The Politicization of Insider‐Outsider Divides in Western Europe: Labor Market Vulnerability and its Political Consequences (2008-2012)

My PhD project focuses on the political consequences of the unequal distribution of labour market vulnerability and segmentation (or ‘dualization’) of advanced capitalist societies into insiders and outsiders. I ask how labour market vulnerability (‘outsiderness’) affects political preferences (with respect to the labor market and the welfare state in general) and how it affects party strategies and electoral choices. Due to structural change in the economy and political policy decisions (de‐industrialization, tertiarization, feminization of the workforce, labour market deregulation), the trend towards dualization is widespread across European labor markets but the questions asked in this project have been only marginally addressed by research. As it turns out, the political potential of the insider‐outsider divide is rather limited, although the divide is of increasing importance (at the time of writing). Despite the fact that labour market vulnerability is concentrated among certain socio‐structural groups and that insiders and outsiders have divergent political preferences, a full politicization of the insider‐outsider divide is unlikely to manifest itself. The composition of the two groups is too heterogeneous, and in the countries, where they are most divided structurally, they cohabit in the same households, which neutralizes their conflict potential. Moreover, the social democratic parties, who would be crucial for the mobilization of this divide, do not focus their mobilization attempts on either one of the two groups, but try to mobilize larger electoral coalitions composed of both groups, even if, as the analysis of the electoral behavior of the two groups showed they are not always successful at that. Only as an opposition party are the social democrats able to mobilize both groups to the same extent.


Who is in and who is out? The political representation of insiders and outsiders in Western Europe (2011-2013)

In this project, we want to know to what extent, why and with which political and electoral consequences post-industrial societies become more and more divided in insiders and outsiders. In this project, we developed a novel and more fine-grained measure of individuals exposed to high labor market vulnerability - so-called labor market outsiders -, based on individuals’ risk of being atypically employed or unemployed. Thus, in contrast to the previously existing literature on insider/outsider divides, which relies on the current employment status to measure insiders and outsiders, we consider outsiders as individuals with a particularly high risk for unemployment and atypical employment. The new measurement provides us with a stable and realistic measure of an individual’s labor market situation, and it also allows us measure to what extent outsiders are out, what we call “outsiderness”. With this new measure, we investigate insiders' and outsiders' social policy preferences. Expanding the analytical focus on preferences that are beyond immediate interest to the insider/outsider distinction but have broader distributive implications, we analyzed preferences for different distributive logics of welfare states. Our results that labor market vulnerability has a consistent and strong effect on social policy preferences motivated us to engage more profoundly in the literature on the relationship between labor market risks and political preferences. We analyzed the interaction between education level and outsiderness on welfare state preferences and took into account the conditioning effect of household composition on the importance of outsiderness on welfare state preferences.

with Silja Häusermann and Thomas Kurer