Is there a selection bias in roll call votes? Evidence from the European Parliament

We examine the magnitude and significance of selection bias in roll call votes. Prior to 2009, all recorded (roll call) votes in the European Parliament had to be requested explicitly by European Political Groups. Since 2009, a roll call vote has been mandatory on all final legislative votes. We exploit that change in the rules and compare differences between final legislative votes, amendment votes and non-legislative votes before and after 2009, using a difference-in-differences approach with extensive controls. Using data from the Sixth (2004–2009) to Seventh (2009–2014) European Parliaments, we fail to find any large differences in voting cohesion for the main political groups. We find even less significance when we control for changes in parliamentary membership between those two periods. The results suggest that selection biases in the European Parliament associated with strategic choices are negligible.     

Polarized preferences versus polarizing policies

Much of contemporary political debate in the United States focuses on the issue of polarization: specifically, its causal antecedents and its consequences for policymaking and political conflict. In this article, we argue that partisan preference polarization—conventionally defined as the difference in the favored policy positions of legislators from the two major parties—is not a sufficient statistic for potential political conflict in national politics . Rather, a well-defined measure of potential conflict must take into account (1) the locations of status quo policies and proposed alternatives; and (2) the shape of underlying utility functions. We propose measures of the likely contentiousness of a given status quo policy and of a proposal to move that policy. We then demonstrate the usefulness of these measures using estimates of utility function and final passage vote parameters on enacted legislation from the 111th US Senate (2009–2011).     

The ideological nationalization of partisan subconstituencies in the American States

Since the mid-twentieth century, elite political behavior in the United States has become much more nationalized. In Congress, for example, within-party geographic cleavages have declined, roll-call voting has become more one-dimensional, and Democrats and Republicans have diverged along this main dimension of national partisan conflict. The existing literature finds that citizens have only weakly and belatedly mimicked elite trends. We show, however, that a different picture emerges if we focus not on individual citizens, but on the aggregate characteristics of geographic constituencies. Using biennial estimates of the economic, racial, and social policy liberalism of the average Democrat and Republican in each state over the past six decades, we demonstrate a surprisingly close correspondence between mass and elite trends. Specifically, we find that: (1) ideological divergence between Democrats and Republicans has widened dramatically within each domain, just as it has in Congress; (2) ideological variation across senators’ partisan subconstituencies is now explained almost completely by party rather than state, closely tracking trends in the Senate; and (3) economic, racial, and social liberalism have become highly correlated across partisan subconstituencies, just as they have across members of Congress. Overall, our findings contradict the reigning consensus that polarization in Congress has proceeded much more rapidly and extensively than polarization in the mass public.     

37 years with Keith T. Poole

This piece contains slightly revised remarks made at the conference honoring Keith T. Poole held at the University of Georgia in May, 2017. Poole’s major contributions are summarized.     

Extreme idealism and equilibrium in the Hotelling–Downs model of political competition

In the classic Hotelling–Downs model of political competition, no pure strategy equilibrium with three or more strategic candidates exists when the distribution of voters’ preferred policies is unimodal. I study the effect of introducing two idealist candidates to the model who are non-strategic (i.e., fixed to their policy platforms), while allowing for an unlimited number of strategic candidates. Doing so, I show that equilibrium is restored for a non-degenerate set of unimodal distributions. In addition, the equilibria have the following features: (1) the left-most and right-most candidates (i.e., extremists) are idealists; (2) strategic candidates never share their policy platforms, which instead are spread out across the policy space; and (3) if more than one strategic candidate enters, the distribution of voter preferences must be asymmetric. I also show that equilibria can accommodate idealist fringes of candidates toward the extremes of the political spectrum.     

Saying versus doing: a new donation method for measuring ideal points

Scaling methods pioneered by Poole and Rosenthal (Am J Polit Sci 29(2):357–384, 1985) redefined how scholars think about and estimate the ideologies of representatives seated in the US Congress. Those methods also have been used to estimate citizens’ ideologies. Whereas studies evaluating Congress typically use a behavioral measure, roll call votes, to estimate where representatives stand on the left-right ideological spectrum, those of the public most often have relied on survey data of stated, rather than revealed, preferences. However, measures of individuals’ preferences and, accordingly, estimates of their ideal points, may differ in important ways based on how preferences are elicited. In this paper, we elicit the same individuals’ preferences on the same 10 issues using two different methods: standard survey responses measured on a Likert scale and a donation exercise wherein individuals are forced to divide $1.50 between interest groups with diametrically opposed policy preferences. Importantly, expressing extreme views is costless under the former, but not the latter, method. We find that the type of elicitation method used is a significant predictor of individuals’ ideal points, and that the elicitation effect is driven primarily by Democratic respondents. Under the donation method, the ideal points of Democrats in the aggregate shift left, particularly for those Democrats who are politically engaged. In contrast, wealthy Democrats’ ideal points shift to the right. We also document effects for Republicans and Independents and find that overall polarization is similar under both elicitation methods. We conclude with a discussion of our results, and the consequences and tradeoffs of each elicitation method.     

Bureaucratic institutional design: the case of the Italian NHS

We propose a model where a regional government’s choice of the number of bureaucratic agencies operating in a region depends upon the degree of substitutability and complementarity of the bureaucratic services being demanded. We show that, if the government perceives the citizens’ demand as a demand for substitutable services, it will choose provision by two independent agencies. If the government perceives the citizens’ demand as a demand for complementary services, it will choose provision by a single consolidated agency. Exogenous shocks to the number of citizens amplify these incentives. Evidence from the Italian National Health Service (NHS) supports this hypothesis. Results show a positive effect of proxies of substitutable services on the number of regional local health authorities and a negative effect of proxies of complementary services. The major immigration amnesties, taken as shocks to the number of citizens entitled to the service, magnify these effects.     

Constitutional political economy,democratic theory and institutional design

Democracy and constitutionalism are both central to the Western political tradition. And yet, constitutional restrictions are often perceived to be in tension with democratic commitments. I argue that the constitutional political economy approach developed by Nobel Laureate James Buchanan resolves the tension between constitutionalism and the values of democratic governance by shifting the analysis from a system-attributes perspective that focuses on the particular institutional properties of a political order to a system-legitimacy perspective that focuses on the manner in which political institutions gain democratic legitimacy. In so doing, the approach reveals that constitutionalism can be understood as a natural expression of democratic values.     

Zwischen Herrschaftskontrolle und Verschwörungstheorie

Public and academic debates often lament a “crisis of trust” endangering democratic stability. In contrast, this article seeks to demonstrate the value of distrust in political relations, a certain form of which should be considered, such as trust, a prerequisite of democracies. To underline this thesis, this contribution discusses categories that clarify the relationality of the concept of distrust (its directedness and modalities) and that allow for a discussion of the relation of trust and distrust, which are introduced as an asymmetrical pair of opposites – with far-reaching consequences for the common discourse on trust. After presenting several historical and current arguments in favor of the value of political distrust, this article will end with a deeper look on those forms of distrust that should indeed be considered dysfunctional and dangerous for democratic orders.     

Elektorale Responsivität als Kriterium zur Beurteilung des deutschen Bundestagswahlrechts

We argue that plurality systems strengthen the accountability of governments towards the electorate while proportional systems lead to a broad representation of voter interests in parliament and coalition governments. We demonstrate these effects in an analysis of all German federal elections from 1949 to 2017 using first-tier votes and directly elected deputies as reflecting the plurality segment and second-tier votes and the seat shares of parties as reflecting the proportional representation segment. We show that the percentages of directly elected deputies react more to differences in perceived party competences (party valences) than the percentages of all party deputies. Electoral system reforms should take into account the effects of both parts of the German electoral system.