The field of electoral systems research: A critical survey

The purpose of this article is to survey and evaluate the development and the current state of the field of electoral systems research. It will treat both the field's strengths and its weaknesses, but my main emphasis will be on the weaknesses and, on the whole, I shall be quite critical. My critique will move from the general to the specific: I shall begin with some very general observations concerning the state of the field, and end with a discussion of one specific, but by no means minor, problem: the crucial question of how we should measure the degree of proportionality or disproportionality of different electoral systems.     

Strategic adaptation to new electoral systems

How quickly, to what extent and under what conditions do voters and elites adapt to new electoral institutions in order to not waste their votes and effort on hopeless competitors? A latent‐curve model of strategic adaptation is developed and fitted to district‐level election data from Spain. The extent of strategic adaptation is generally found to vary with the strength of the electoral system. However, grave ethnic tensions are demonstrated to seriously retard adaptation even under favourable institutional conditions.     

Party systems,electoral systems and constraints on corruption

This article explores the relationship between the party system, electoral formulas and corruption. Previous research has focused on the various incentives for political actors to monitor, or engage in corruption based on variations in the electoral formula. However, the electoral formula has mainly served as a proxy for the party system – whether multi-party or two-party. In this analysis, I test directly the relationship between party systems and corruption and in addition, add a degree of nuance to the established line of thinking within this literature. I argue that two-party systems in countries with predominantly single-member district (SMD) electoral formulas will demonstrate lower corruption on average than multi-party systems in SMD countries. However, I argue that this interaction effect does not play out in countries with proportional representation (PR). I test this hypothesis on 70 democratic and semi-democratic countries from 1987 to 2005 and find strong empirical support for the claim that multipartism in SMD countries is associated with higher levels of corruption, while the party system’s relationship with corruption plays no role in PR countries.     

A welfare simulation of mixed-member electoral systems

This paper considers welfare properties of mixed-member electoral systems. In a mixed system, voters may elect high-quality district representatives without excessive campaign fundraising. Simulation results reveal that the optimally mixed electoral system can be welfare-enhancing, but a poorly targeted electoral reform can do worse than a PR system or plurality rule.     

How electoral systems affect MPs’ positions

The question how different electoral systems affect the representation of voters in parliaments has been a thorny issue for a considerable time. While some research suggests that first-past-the-posts systems should lead to a closer correspondence between the preferences of the electoral district’s median voter and of its representative, other work concludes that in proportional representation (PR) systems, especially with open lists, candidates have an incentive to cultivate a strong personal vote.     

Uncovering the micro-foundations of turnout and electoral systems

This paper tackles the micro-foundations of voting and addresses why proportional representation systems (PR) are associated with higher turnout than majoritarian systems (SMD). I argue that individual evaluations of the differential benefit in the calculus of voting are affected by spatial party competition framed by electoral institutions. Unlike PR, SMD constrains the number of parties and creates large centripetal forces for party competition, which reduces the perceived benefits of voting. A citizen’s voting propensity is related to the distance between her preferred policy position and those of her most- and least-favored parties. I use multilevel modeling to analyze individual voting decisions structured by aggregate variables across 64 elections. The empirical findings confirm the argument and the mechanism holds both in established and non-established democracies.     

Income inequality,electoral systems and party polarisation

This study analyses why income inequality and party polarisation proceed together in some countries but not in others. By focusing on the relationship between income inequality, the permissiveness of electoral systems and party polarisation, the study offers a theoretical explanation for how the combination of income inequality and permissive electoral systems generates higher party polarisation. After analysing a cross‐national dataset of party polarisation, income inequality and electoral institutions covering 24 advanced democracies between 1960 and 2011, it is found that a simple correlation between income inequality and party polarisation is not strong. However, the empirical results indicate that greater income inequality under permissive electoral systems contributes to growing party polarisation, which suggests that parties only have diverging ideological platforms due to greater income inequality when electoral systems encourage their moves towards the extreme; parties do not diverge when electoral systems discourage their moves towards the extreme.     

The electoral budget cycle

This article begins with a review of the now substantial literature on the thesis that polticians manipulate governmental outputs so as to favor their chances of reelection. It concludes that while this “electoral cycle” thesis was initially overstated by its proponents, it retains more plausibility than recent critics have allowed. This conclusion is then demonstrated through an analysis of expenditures by the ten provincial governments in Canada between 1951 and 1984.     

Mixed electoral rules’ impact on party systems

The growing literature about mixed electoral systems has addressed their effect on party systems, voting behavior, campaign strategies, legislative roll-call voting, and other issues in a handful of countries. But, the effect of mixed systems has not been fully evaluated cross-nationally or longitudinally. Using data from the World Bank’s Database of Political Institutions, we address this gap in the literature by investigating two related questions. First, do mixed electoral rules produce different election outcomes than other election rules? Second, are these results attenuated by the definitions of mixed systems that scholars employ? We find that mixed systems generate outcomes that are distinct from other electoral systems and that these findings are generally robust across different definitions.     

The international diffusion of electoral systems: The spread of mechanisms tempering proportional representation across Europe

There is an assumption in much of the electoral engineering literature that domestic episodes of electoral system choice occur in a vacuum, isolated from international influences. Yet this assumption remains largely untested, despite the comparative focus of much of that literature. This article focuses on part of this gap by considering two electoral mechanisms that seek to limit party system fragmentation under proportional representation – low district magnitudes and high electoral thresholds – and shows that the mechanisms have spread across many European countries during the post‐1945 period. Analyses reveal that national legislators are more likely to adopt one of these electoral mechanisms when a large number of peer countries have made similar choices within the last two or three years. This effect is robust to various model specifications and to the inclusion of multiple controls. The article also offers some qualitative evidence from case studies and parliamentary debates.     

The electoral consequences of voter ignorance

A great deal of research has suggested that scholarly and popular concerns about low levels of citizen political knowledge are exaggerated. One implication of that research is that political history would have unfolded just as it did even if electorates had been more politically informed. This paper presents evidence that counters these claims, showing an infusion of electorally relevant information in twenty-seven democracies would have likely led to a lot of vote “switching”, ultimately changing the composition of many governments. The paper also directly and systematically examines what we might call the “enlightened natural constituency” hypothesis, which expects lower-income citizens to vote disproportionately for left parties once armed with more political knowledge. While the basic argument about how political ignorance disproportionately affects the left’s natural constituency is not new, the hypothesis has thus far not been tested. The analysis provides provisional support for the hypothesis.     

Partisan self-interest and electoral reform: The new Italian electoral law of 2005

In December 2005, Italy's mixed-member electoral system was replaced with a system of bonus-adjusted proportional representation. The reform conformed with rational-choice models in that it was imposed by the ruling coalition, which sought to bolster its own power interests. But the case illustrates the impossibility of reducing such power-based motivation to a single goal, such as seat maximization. Power is shaped by many factors, and electoral systems influence many of these. This article develops a theoretical framework for understanding the various power-oriented considerations that may operate in electoral reform. It then analyses the role these played in Italy. It argues, in particular, for the need to take account of coalition dynamics when studying such processes.     

Strikes are more common in countries with majoritarian electoral systems

Strikes are more common in those OECD countries where the legislature is elected in single member districts (SMD) than in those where it is elected by proportional representation (PR). Furthermore, more working days are lost due to industrial conflict in countries with SMD. I suggest a politico-economic explanation for these rarely noticed empirical regularities. Further empirical testing – including controls drawn from previous strike research – reveals that they hold up in a variety of econometric specifications.     

The effect of electoral rules on voting behavior: the electoral college and shift voting

The Electoral College has a measurable effect on the propensity of the rational voter to vote for the candidate he most prefers. The ‘slippage’ between the individual's articulated preference ordering and his actual vote is analyzed (using 1968 data) with respect to the strategic position of the voter in his state. The direction of the findings support the theoretically-derived propositions. Nevertheless, the low overall incidence of shifts and the reluctance of voters to shift from nationally-viable candidates demonstrates the overwhelming influence of the national electoral environment.     

Comparisons among electoral systems: Distinguishing between localism and candidate-centered politics

Carey and Shugart (1995) offer a four component composite index of “incentives to cultivate a personal vote.” We argue that this index, while tapping important aspects of electoral system choice, is best regarded as encompassing two distinct dimensions: degree of party-centeredness of the electoral system, on the one hand, and incentives for “parochial” behavior on the part of legislators, on the other. Also, while we have no problem with the three indicators used by Carey and Shugart to measure party-centeredness; to measure parochial incentives we prefer to use a new measure, E (Grofman, 1999a) of the size of a legislator's electoral constituency, rather than using district magnitude, m, as a proxy for a the size of a legislator's geographic constituency, as Carey and Shugart do. In the conclusion to the paper we argue that the degree of similarity between any two electoral systems will depend upon the research question at issue, and that the expected degree of proportionality of election results is only one of the many political consequences of electoral laws to which we ought to be paying attention.     

Political parties, electoral systems and democracy: A cross-national analysis

Abstract.  The number of political parties and the type of electoral system may impact the level of democratic functioning within a government. Models are used to explore whether the number of political parties increases a country's democracy score on the POLITY IV measure of democracy, and whether countries with proportional representation electoral systems have higher democracy scores than those without. Multiple regression analysis reveals that countries with proportional electoral systems have higher democracy scores. Countries involved in the Third Wave of democracy may find the choice of an electoral system among the most important issues in structuring a democratic government.     

Duverger's Law in mixed legislative systems: The impact of national electoral rules on district competition

How do institutional factors shape district competition in mixed legislative systems? Preliminary evidence suggests the distinction between sub‐types of mixed systems alone poorly explains variation in district results. Consistent with the contamination thesis, this analysis suggests three additional national‐level factors at play: fused ballots, the electoral threshold for proportional representation seats, and the existence of compulsory voting laws. Regression analysis on an original dataset covering 90 mixed system elections in 23 countries (1990–2012) finds that while mixed member majoritarian systems correlate with fewer district candidates, these three often overlooked factors are also statistically significant. This analysis highlights the complexity of mixed systems and suggests why many of them diverge from Duverger's Law.     

The electoral consequences of two great crises

Who benefits from deep economic crises: the left, the right or neither? On the basis of evidence from elections in 1929–1933 and 2008–2013 in all states that were democracies in both periods, it is argued in this article that the electoral consequences of the Great Depression and the Great Recession were surprisingly similar: in both periods, right‐wing parties were at first more successful than left‐wing parties, although this effect only lasted for a few years. The manner in which a crisis develops over time should be taken into account when examining the effects of deep economic downturns on the electoral fortunes of the left and the right.