Adams and Merrill have developed a model of policy-seeking parties in a parliamentary democracy competing in a PR electoral system, in which party elites are uncertain about voters’ evaluations of the parties’ valence attributes such as competence, integrity and charisma. This article extends that model to situations where voters hold coalitions of parties collectively responsible for their valence-related performances, such as how voters evaluate governing parties’ competence in handling issues like the economy, crime and foreign policy crises. It may also be relevant to voters’ evaluations of proto-coalitions of opposition parties. Computations suggest the central substantive conclusions reported in Adams and Merrill extend to this generalized model, and that collective responsibility enhances coalition members’ incentives to converge to similar policy positions but depresses their prospects of achieving their policy objectives.

In international politics ‘friends’ co-ally. But friendship is relational and contextual. Countries are more likely to act on particular common interests if few other actors share that identity. In contrast, new cleavages are likely to emerge as an identity becomes ubiquitous. The tendency for states to form alliances based on certain affinities is thus best thought of as a variable, rather than as a constant. For example, in systems where democracies are scarce, democracies eagerly co-ally. As democracy becomes common, however, incentives binding democratic allies together weaken compared to other definitions of mutual interest. This argument, and the evidence we provide, suggest that the salience of identities as cues to affinity and difference vary with the distribution of types in the system.

What explains local variation in electoral manipulation in countries with ongoing internal conflict? The theory of election fraud developed in this article relies on the candidates’ loyalty networks as the agents manipulating the electoral process. It predicts (i) that the relationship between violence and fraud follows an inverted U-shape and (ii) that loyalty networks of both incumbent and challenger react differently to the security situation on the ground. Disaggregated violence and election results data from the 2009 Afghanistan presidential election provide empirical results consistent with this theory. Fraud is measured both by a forensic measure, and by using results from a visual inspection of a random sample of the ballot boxes. The results align with the two predicted relationships, and are robust to other violence and fraud measures.

Do people believe the votes they cast are truly secret? Novel items added to a nationally representative survey show that 25 per cent of respondents report not believing their ballot choices are kept secret and over 70 per cent report sharing their vote choices with others. These findings suggest that standard models of candidate choice should account for the potential effects of doubts about ballot secrecy. Consistent with this view, regression analysis shows that social forces appear to have a greater effect on vote choices among people who doubt the formal secrecy of the ballot. This analysis supports the broader claim that the intended benefits of institutional rules may not be realized if people's perceptions of these rules differ from their formal characteristics.

This article explores the influence of Protestant missionaries on male–female educational inequalities in colonial India. Causal mechanisms drawn from the sociology and economics of religion highlight the importance of religious competition for the provision of public goods. Competition between religious and secular groups spurred missionaries to play a key role in the development of mass female schooling. A case study of Kerala illustrates this. The statistical analysis, with district-level datasets, covers colonial and post-colonial periods for most of India. Missionary effects are compared with those of British colonial rule, modernization, European presence, education expenditures, post-colonial democracy, Islam, caste and tribal status, and land tenure. Christian missionary activity is consistently associated with better female education outcomes in both the colonial and post-colonial periods.

Drawing on a panel of 136 countries over the period 1982–2004, we study a tipping point version of Vogel's ‘California Effect’ in the context of the diffusion of human rights practices. Because human rights practices are often deeply embedded in a society's customs and political institutions, we expect that a high level of pressure from the importing countries is needed to bring about changes in an exporting country's human rights records. We find strong empirical support for this threshold effect; provided that the average level of respect for human rights in importing countries is sufficiently high, trading relationships can operate as transmission belts for the diffusion of human rights practices from importing to exporting countries.

A large number of studies of ideological congruence, and of the effect of public opinion on policy outcomes more generally, have relied on the Kim-Fording (KF) measure of median voter opinion. This measure has the great virtue of being readily calculable – no direct measurement of voter opinion is required – but it rests on assumptions concerning party locations and voter behaviour that are unquestionably incorrect, at least some of the time. This article explores the sensitivity of the KF measure to violations of its core assumptions through simulation experiments. It then uses public opinion data to assess the degree to which consequential levels of violation occur in actual democratic systems. The article concludes with a discussion of what the KF median really measures and where it can – and cannot – be safely used.

Is democracy a requirement of justice or an instrument for realizing it? This article argues that the correct answer to this question depends on the background circumstances against which democracy is defended. In the presence of thin reasonable disagreement about justice, we should value democracy only instrumentally (if at all); in the presence of thick reasonable disagreement about justice, we should value it also intrinsically, as a necessary demand of justice. Since the latter type of disagreement is pervasive in real-world politics, the conclusion is that theories of justice designed for our world should be centrally concerned with democracy.

In districts where only one seat is contested, the electoral formula (plurality or majority) should be a major determinant of the number of parties that receive votes. Specifically, plurality rule should generate two-party competition while other institutional arrangements should generate electoral fragmentation. Yet tests of these propositions using district-level data have focused on a limited number of cases; they rarely contrast different electoral systems and have reached mixed conclusions. This study analyses district-level data from 6,745 single-member district election contests from 53 democratic countries to test the evidence for Duverger's Law and Hypothesis. Double-ballot majoritarian systems have large numbers of candidates, as predicted, but while the average outcome under plurality rule is generally consistent with two-party competition, it is not perfectly so. The two largest parties typically dominate the districts (generally receiving more than 90 per cent of the vote), and there is very little support for parties finishing fourth or worse. Yet third-place parties do not completely disappear, and ethnic divisions shape party fragmentation levels, even under plurality rule. Finally, institutional rules that generate multiparty systems elsewhere in the country increase electoral fragmentation in single-member plurality districts.

This article discusses recent research on party politics and the welfare state that differs from traditional ‘partisan politics theory’. The traditional approach states that left-wing and right-wing parties hold contrasting positions on welfare issues, depending on the interests of their respective electorates. This view has recently been challenged by three strands of research, which emphasize (1) the effects of electoral change on parties’ policy positions, (2) the role of context, notably electoral institutions, party competition and the configuration of party systems, and (3) the impact of different linkages between parties and electorates (particularistic versus programmatic). The implications of these arguments for the applicability of partisan theory are presented, and theoretical and empirical issues are identified for further research.