A Psychologically Based Model of Voter Turnout

We analyze a psychologically based model of voter turnout. Potential voters experience regret if they fail to vote, which is the motivation for participation in voting. Regret from abstention is inversely related to the margin of victory. Voters on the winner's side experience less regret than those on the loser's side. We show that the unique equilibrium involves positive voter turnout. We show that the losing side has higher turnout. In addition, voter turnout is positively related to importance of the election and the competitiveness of the election. We also consider scenarios in which voters are uncertain about the composition of the electorate's political preferences and show similar phenomena emerge.     

Advocacy and political convergence under preference uncertainty

We study the formation of advocacy groups and how they can impact policy outcomes by revealing information about voters׳ preferences to uninformed political candidates. We conduct a laboratory experiment based on a two-candidate spatial electoral competition setting where the policy preferences of voters are (initially) unknown and change over time. In the control treatment candidates learn about the preferred policy of the median voter through the voting outcome of elections. In the advocacy treatments, voters can organize themselves into advocacy groups in order to reveal their policy preferences. We find that voters often overcome the collective action problem of forming an advocacy group. In fact, we observe the formation of both informative advocacy groups, which convey new information, and uninformative advocacy groups, which do not. Overall, advocacy groups significantly speed up the convergence to the preferred policy of the median voter. However, advocacy does not lead to higher earnings as the gains from faster convergence are offset by the costs of group formation.     

Exit polls,turnout, and bandwagon voting: Evidence from a natural experiment

We exploit a voting reform in France to estimate the causal effect of exit poll information on turnout and bandwagon voting. Before the change in legislation, individuals in some French overseas territories voted after the election result had already been made public via exit poll information from mainland France. We estimate that knowing the exit poll information decreases voter turnout by about 11 percentage points. Our study is the first clean empirical design outside of the laboratory to demonstrate the effect of such knowledge on voter turnout. Furthermore, we find that exit poll information significantly increases bandwagon voting; that is, voters who choose to turn out are more likely to vote for the expected winner.     

Compulsory versus voluntary voting: An experimental study

We report on an experiment comparing compulsory and voluntary voting institutions in a voting game with common preferences. Rational choice theory predicts sharp differences in voter behavior between these two institutions. If voting is compulsory, then voters may find it rational to vote insincerely, i.e., against their private information. If voting is voluntary so that abstention is allowed, then sincere voting in accordance with a voter's private information is always rational while participation may become strategic. We find strong support for these theoretical predictions in our experimental data. Moreover, voters adapt their decisions to the voting institution in place in such a way as to make the group decision accuracy differences between the two voting institutions negligible. The latter finding may serve to rationalize the co-existence of compulsory and voluntary voting institutions in nature.     

Mapping the theory of political representation to the empirics: An investigation for proportional and majoritarian rules

We combine roll call votes and referendum decisions on identically worded legislative proposals to identify the effect of electoral rules on the way Swiss Members of Parliament (MPs) represent their constituents’ preferences. We exploit the fact that MPs in both Houses of Parliament are elected in the same electoral districts (the cantons). Yet, in the Lower House, MPs are elected using a proportional rule, while in the Upper House they are elected employing a majoritarian rule. We find that electoral rules matter strongly for political representation. The voting patterns of MPs are fully in line with three theoretical predictions regarding the influence of electoral rules on representation of constituents’ preferences: 1) The probability that a proportional-elected MP accepts a legislative proposal closely follows the share of voters that accept the proposal in the referendum. 2) In contrast, for majority-elected MPs the probability of acceptance is strongly increasing in the share of voter acceptance if the latter is close to the 50% threshold. 3) The estimated probability that an Upper House MP votes “yes” as a function of the share of voters voting “yes” in the referendum has an S-shape form with an inflection point close to 50%.     

Let the experts decide? Asymmetric information,abstention, and coordination in standing committees

We examine abstention when voters in standing committees are asymmetrically informed and there are multiple pure-strategy equilibria – swing voterʼs curse (SVC) equilibria where voters with low-quality information abstain and equilibria when all participants vote their information. When the asymmetry in information quality is large, we find that voting groups largely coordinate on the SVC equilibrium which is also Pareto optimal. However, we find that when the asymmetry in information quality is not large and the Pareto optimal equilibrium is for all to participate, significant numbers of voters with low-quality information abstain. Furthermore, we find that information asymmetry induces voters with low-quality information to coordinate on a non-equilibrium outcome. This suggests that coordination on “letting the experts” decide is a likely voting norm that sometimes validates SVC equilibrium predictions but other times does not.     

Dissertation abstract: Voting in the laboratory

Almost every week national elections are held somewhere in the world. Many more elections take place at federal and local levels of government. Surely, these are important events to many of us. This thesis aims at providing a better understanding of why and how people vote in elections. Three original modifications of Palfrey and Rosenthal’s (1983) participation game are used to study voter turnout theoretically and experimentally.¹ In the basic game, each voter supports (i.e., prefers) one of two exogenous candidates and privately decides between voting at a cost and abstaining (without costs). The candidate who receives more votes wins the election (ties are broken randomly) and each supporter of this candidate receives an equal reward, independent of whether or not she voted. The first study (published in the American Political Science Review 100, pp. 235–248) analyzes the effects of social embeddedness on turnout, assuming that voters may be influenced by observing the decisions of other voters around them (e.g., a family or working place). Our experimental results show that the social context matters: this information increases turnout by more than 50%. The increase is greater when neighbors support the same candidate rather than when they support opponents. The second study investigates the effects of public opinion polls on voter turnout and welfare. Poll releases resolve uncertainty about the level of support for each candidate caused by `floating’ voters, whose preferences change across elections. This information increases turnout in the laboratory by 28–34%, depending on the fraction of floating voters in the electorate. If polls indicate equal levels of support for both candidates—in which case aggregate benefits for society are not affected by the outcome—welfare decreases substantially due to costs from excessive turnout. In the final study, elections are preceded by the competition between two candidates: they simultaneously announce binding policy offers in which some voters can be favored at the expense of others through inclusion and exclusion in budget expenditure (Myerson 1993).² We observe that policy offers include 33% more voters—yielding a smaller budget share for each—when voting is compulsory rather than voluntary. Moreover, we find evidence of political bonds between voters and long-lived parties. Overall, in all three experiments many subjects strongly react to economic incentives (i.e., benefits, costs, and informational clues), often in line with what is observed outside of the laboratory. JEL Classification C72, C92, D72 Dissertation Committee: Arthur Schram, University of Amsterdam (advisor) Axel Ockenfels, University of Cologne Thomas Palfrey, California Institute of Technology Cees van der Eijk, University of Nottingham Frans van Winden, University of Amsterdam ¹Palfrey, T.R., & Rosenthal, H. (1983). A strategic calculus of voting. Public Choice, 41, 7–53. ²Myerson, R.B. (1993). Incentives to cultivate favored minorities under alternative electoral systems. American Political Science Review, 87, 856–869.     

Learning in Elections and Voter Turnout

Voter turnout in game theoretic models of voting has typically been difficult to predict because of the problem of multiple Nash equilibria ( Palfrey and Rosenthal 1983, 1985 ). Many of these equilibria require an extreme precision of beliefs among voters that is unlikely to be reached in real elections. At the same time, mechanisms like pre‐election polls exist to shape the beliefs of voters about expected turnout. We combine these two features in a model of voter learning in elections and characterize the asymptotically stable equilibria of both complete and incomplete information games in a simple symmetric setting with two candidates. We also show how the model can be used to qualitatively explain several phenomena observed in reality: increases in costs of voting affect turnout adversely but there may be persistence of turnout levels between elections even though costs and other parameters change. Increase in uncertainty increases turnout while increases in the size of the electorate decrease it, in line with intuition.     

Voter turnout and the principle of ‘one person,one vote’: empirical evidence from the constituency freeze in India

This article uses panel data from national and state elections in India during the period 1977–2007 to examine the effect of inequality in constituency population size on voter turnout. During this period, constituency boundaries in India remained fixed. As a result, differences in population size between constituencies increased, thus changing the value of a single vote. Using this large variation in population size and informative data, this article carefully distinguishes the effect of population size from other factors. We find that an increase of one million electorates decreases voter turnout by 12–27%. In addition, we find that the share of votes gained by national political parties is greater in small-population constituencies. This suggests that political parties direct their efforts in electoral campaigns preferentially to less populous constituencies; as a result, voters in small constituencies are more likely to participate in elections.     

Indecision Theory: Weight of Evidence and Voting Behavior

In this paper, we show how to incorporate weight of evidence, or ambiguity, into a model of voting behavior. We do so in the context of the turnout decision of instrumentally rational voters who differ in their perception of the ambiguity of the candidates' policy positions. Ambiguity is reflected by the fact that the voter's beliefs are given by a set of probabilities, each of which represents in the voter's mind a different possible scenario. We show that a voter who is averse to ambiguity considers abstention strictly optimal when the candidates' policy positions are both ambiguous and they are “ambiguity complements.” Abstaining is preferred since it is tantamount to mixing the prospects embodied by the two candidates, thus enabling the voter to “hedge” the candidates' ambiguity.     

The Swing Voter's Curse in the Laboratory

This paper reports the first laboratory study of the swing voter's curse and provides insights on the larger theoretical and empirical literature on "pivotal voter" models. Our experiment controls for different information levels of voters, as well as the size of the electorate, the distribution of preferences and other theoretically relevant parameters. The design varies the share of partisan voters and the prior belief about a payoff relevant state of the world. Our results support the equilibrium predictions of the Feddersen–Pesendorfer model. The voters act as if they are aware of the swing voter's curse and adjust their behaviour to compensate. While the compensation is not complete and there is some heterogeneity in individual behaviour, we find that aggregate outcomes, such as efficiency, turnout and margin of victory, closely track the theoretical predictions.     

Playing for Your Own Audience: Extremism in Two‐Party Elections

This paper considers a two‐party election with a single‐dimensional policy space. We assume that each voter has a higher probability of observing the position of the party he is affiliated with than the position of the other party, an assumption that is consistent with the National Election Studies (NES) electoral data set. In equilibrium, the two parties locate away from the median, because the voters who dislike a party's platform observe its policy choice with a lower probability, and its own audience like policy choices that cater to its taste. As the asymmetry in voter information or the cost of voting increases, the parties adopt more extreme platforms, while if there are fewer extreme voters the opposite effect occurs. Making voters more symmetrically informed about the two parties' platforms increases the welfare of society, while asymmetric information acquisition by the voters is worse than no information acquisition at all.     

Election frequency,choice fatigue,and voter turnout

Influential scholars have argued that frequent elections lead to voter fatigue and can therefore be directly responsible for low turnout in countries characterized by frequent contests. However, other theories predict that frequent elections can even increase turnout. The existing empirical evidence is problematic as it simply correlates election frequency with turnout. By contrast, I exploit a natural experiment in the German state of Hesse, where voters from different municipalities faced the same electoral contest but experienced different election frequency, due to the staggered timing of some local elections. I find that when two elections are scheduled within a relatively short period of time, voter turnout at the later election is significantly reduced. This effect is stronger when the election is deemed less important in the eyes of the voters. Election frequency thus might also partly explain the wide turnout gap between first- and second-order elections, as suggested by Lijphart (1997).     

Coordinated voting in sequential and simultaneous elections: some experimental evidence

This paper studies a situation wherein a set of voters choose between two alternatives in the presence of a payoff externality. Specifically, regardless of her intrinsic preference, a voter’s payoff is maximized should she vote for the alternative that garners a majority of the votes cast. Are votes coordinated on a single alternative? Using laboratory experiments, we examine voting patterns in sequential voting and simultaneous voting elections. Across both election types, we also vary the amount of information that an individual voter has regarding the intrinsic preferences of the other voters. Our main findings are as follows. In the “low” information treatment, sequential voting elections facilitate coordinated voting. However, in the “high” information treatment, voting patterns are not dependent on how the election is structured.     

The causal effect of compulsory voting laws on turnout: Does skill matter?

A very important, yet unsettled, question is whether mandatory voting affects political participation. This paper exploits a natural experiment to assess the causal impact of compulsory voting on turnout and, more importantly, to test whether the impact is different across skill groups. I find that compulsory voting increases voter turnout by 18 percentage points (28%) and the increase is twice as much in the unskilled citizens than that in the skilled citizens. This study is the first to show, with rigorous empirical evidence, that compulsory voting laws are effective in reducing the skill/socioeconomic gap in political participation. Furthermore, by shaping the electorate, these laws have relevant consequences in terms of the economic policies applied.     

The effect of randomized school admissions on voter participation

There is little causal evidence on the effect of economic and policy outcomes on voting behavior. This paper uses randomized outcomes from a school choice lottery to examine if lottery outcomes affect voting behavior in a school board election. We show that losing the lottery has no significant impact on overall voting behavior; however, among white families, those with above median income and prior voting history, lottery losers were significantly more likely to vote than lottery winners. Using propensity score methods, we compare the voting of lottery participants to similar families who did not participate in the lottery. We find that losing the school choice lottery caused an increase in voter turnout among whites, while winning the lottery had no effect relative to non-participants. Overall, our empirical results lend support to models of expressive and retrospective voting, where likely voters are motivated to vote by past negative policy outcomes.     

Higher turnout increases incumbency advantages: Evidence from mayoral elections

We analyze the effect of electoral turnout on incumbency advantages by exploring mayoral elections in the German state of Bavaria. Mayors are elected by majority rule in two-round (runoff) elections. Between the first and second ballot of the mayoral election in March 2020, the state government announced an official state of emergency. In the second ballot, voting in person was prohibited and only postal voting was possible. To construct an instrument for electoral turnout, we use a difference-in-differences strategy by contrasting turnout in the first and second ballot in 2020 with the first and second ballots from previous elections. We use this instrument to analyze the causal effect of turnout on incumbent vote shares. A 10-percentage point increase in turnout leads to a statistically robust 3.4 percentage point higher vote share for incumbent mayors highlighting the relevance of turnout-related incumbency advantages.     

Voter turnout and the size of government

This paper uses Swedish and Finnish municipal data to investigate the effect of changes in voter turnout on the tax rate, public spending and vote-shares. A reform in Sweden in 1970, which overall lowered the cost of voting, is applied as an instrument for voter turnout in local elections. The reform increased voter turnout in Sweden. The higher voter turnout resulted in higher municipal taxes and greater per capita local public spending. There are also indications that higher turnout decreased the vote share for right-wing parties. I use an individual survey data set to conclude that it was in particular low income earners that began to vote to a greater extent after the reform.     

Voting as a signaling device

In this paper, citizens vote in order to influence the election outcome and in order to signal their unobserved characteristics to others. The model is one of rational voting and generates the following predictions: (i) The paradox of not voting does not arise, because the benefit of voting does not vanish with population size. (ii) Turnout in elections is positively related to the importance of social interactions. (iii) Voting may exhibit bandwagon effects and small changes in the electoral incentives may generate large changes in turnout due to signaling effects. (iv) Signaling incentives increase the sensitivity of turnout to voting incentives in communities with low opportunity cost of social interaction, while the opposite is true for communities with high cost of social interaction. Therefore, the model predicts less volatile turnout for the latter type of communities.     

Fiscal consolidations and electoral outcomes in emerging economies: Does the policy mix matter? Macro and micro level evidence from Latin America

Do voters punish governments that introduce fiscal “austerity” measures? If so, does voter response vary according to the composition of fiscal adjustments? The empirical literature on the political economy of fiscal adjustments, which is mostly OECD-based, argues that consolidations do not have significant electoral consequences. In contrast, we find that voters punish fiscal consolidations at the polls in Latin America. To explain this result, we focus on the way fiscal adjustments episodes are implemented, both in terms of their design (taxes vs. spending) and timing. Such episodes rely fundamentally on increasing tax rates and bases of indirect taxes (such as the VAT) that hit broad segments of the population. Moreover, these policies are often implemented when politicians have no choice but to consolidate, that is, under severe economic circumstances. These macro results are corroborated with micro evidence from an original survey experiment that measures voter’s fiscal policy preferences over the business cycle in seven countries across Latin America. The experimental evidence shows that respondents prefer expenditure cuts to tax increases during downturns, which is the opposite of the type of consolidations that countries typically pursue.