Vincent Heddesheimer

I am a Ph.D. candidate at the Department of Politics at Princeton University. I study political economy with a focus on the political causes and consequences of economic inequality and insecurity.

1. GERDA: German Election Database (with Hanno Hilbig, Florian Sichart, and Andreas Wiedemann). 2025. Nature: Scientific Data, 12: 618. [Abstract] [Website] [Data] [R Package] [Preprint]
   
   Elections are the key mechanism through which voters hold elected officials accountable. The partisan composition of local, state, and federal governments, in turn, shapes policy choices and public goods provision. Yet studying representation, government responsiveness, and partisan politics across multiple levels of government—especially at the local level—has been difficult due to inconsistently reported, incomplete, or insufficiently harmonized election data at small geographic scales. This paper introduces GERDA (https://www.german-elections.com/), a panel dataset of local, state, and federal election results in Germany at the municipality level spanning the past three decades. GERDA includes turnout and vote shares for all major parties and resolves challenges arising from municipal boundary changes and joint mail-in voting districts, yielding a consistent panel of municipalities in their 2021 boundaries. We also provide municipal and county boundary shapefiles to facilitate spatial analyses. Our dataset enables new research on partisan politics, policy responsiveness, and political representation at fine-grained geographic scales and over time.  

1. The Green Transition and Political Polarization Along Occupational Lines (with Hanno Hilbig and Erik Voeten). R&R, American Political Science Review. [Abstract]
   
   Green transition policies set long-term targets to reduce carbon emissions and other pollutants, posing a threat to workers in polluting occupations and communities reliant on these occupations. Can far right parties attract voters who anticipate losing from the green transition? We explore this in Germany, which has ambitious green policies and a large workforce in polluting occupations. The far right AfD started campaigning as the only party opposing green transition policies in 2016. Using a difference-in-differences design, we show AfD support increased in counties with more polluting jobs after this platform change. A panel survey further demonstrates that individuals in these occupations also shifted towards the AfD. Probing mechanisms, we find suggestive evidence that growing far right support is due to changing perceptions of social stigma and lower status. Our results highlight the need for a new research agenda on a backlash against the normative dimension of the green transition.
    
2. Climate Exposure Drives Firm Political Behavior: Evidence from Earnings Calls and Lobbying Data (with Christian Baehr and Fiona Bare). R&R, American Journal of Political Science. [Abstract]
   
   When do firms engage in climate politics? Expected impacts drive political activity. Specifically, we argue that regulatory concerns, business opportunities, and physical risks activate policy preferences and lobbying efforts. We measure firm-level exposure to opportunity, regulatory, and physical aspects of climate change based on discussion in quarterly earnings call transcripts for 11800+ publicly traded firms between 2001 and 2020. We estimate the effect of climate exposure on climate lobbying instances (extensive margin), expenditure (intensive margin), and targets (political entities). We find that more exposed companies, especially in terms of opportunities and regulation, are more likely to lobby. The type of climate exposure, both absolute and relative to industry peers, dictates whether firms lobby, how much they spend on lobbying, and their choice of government target. Taken together, our findings demonstrate the importance of disaggregating firm-level perceptions of climate impacts to understand patterns in political activity.
    
3. Place-Based Policies, Local Responses, and Electoral Behavior (with Hanno Hilbig and Andreas Wiedemann). [Abstract]
   
   Place-based economic policies are increasingly seen as instruments to counter political discontent in economically-depressed regions. Do regional investment subsidies affect electoral behavior? We evaluate this question in the context of Germany's largest regional investment program. Our identification strategy leverages a 2014 subsidy rate cut for manufacturing firms that - due to EU rules - was exogenous to local economic trends. The subsidy cut reduced voting for the far-right AfD and increased support for the incumbent Christian Democrats. We then demonstrate that subsidy cuts trigger two counterreactions: local firms invest more in human capital and local governments invest more in infrastructure and public goods. We argue that these dynamics signal to voters that local governments are responsive and care about their constituents, undermining populist appeals. Our findings suggest that political consequences of place-based policies - and austerity more broadly - cannot be understood without considering counteractions by local firms and governments.
    
4. Building Coalitions: The Partisan Politics of Housing Supply. (draft available upon request)
5. Long-run Political Change after the Great Recession (with Hanno Hilbig). (draft available upon request) [Abstract]
   
   What are the long-term political consequences of economic crises? We assess the enduring impact of the Great Recession on U.S. political outcomes. We employ a difference-in-differences approach, leveraging geographic variation in unemployment shocks. Contrary to claims that major recessions primarily boost anti-incumbent, far-right candidates, we find that counties more severely affected by the recession experienced a sustained increase in Democratic vote shares, particularly in Congressional elections. These effects persisted for at least 10 years. We demonstrate that these results are unlikely to be due to persistent economic decline, demographic changes, shifts in candidate ideology, or fiscal compensation spending. Instead, survey evidence suggests that the recession lowered expectations for upward mobility, likely increasing support for redistribution and thereby benefiting Democratic candidates. Our findings expand the literature by showing that (i) severe economic shocks do not necessarily favor right-wing populists, and (ii) major downturns can continue to influence electoral outcomes long after direct economic consequences have subsided.  
6. Economic Insecurity Increases Affective Polarization and Outgroup-Aversion (with Joanna Bryson). [Abstract]
   
   Political polarization -- the deepening divide between opposing social and political groups -- has become a pressing global challenge, often disrupting democratic governance. While some polarization is expected in politics, the factors driving extreme divisions remain unclear. Economic instability is frequently linked to rising polarization, but causal evidence is limited. Using panel survey data from the Netherlands and a difference-in-differences design, we show that economic insecurity significantly increases affective polarization, a form of division driven by emotional bias rather than policy disagreements. This effect persists for years, particularly among men, and is accompanied by increased distrust and social group clustering. Our findings suggest that economic insecurity is a key driver of polarization, highlighting the role of labor market stability in shaping political and social cohesion. Addressing economic precarity may help mitigate the spread of polarization in modern democracies.