A wide range of studies find that democracies experience more terrorism than non-democracies. However, surprisingly little terrorism research takes into account the variation among democracies in terms of their electoral institutions. Furthermore, despite much discussion of the differences in terrorist groups’ goals in the literature, little quantitative work distinguishes among groups with different goals, and none explores whether and how the influence of electoral institutions varies among groups with different goals. The argument in this article posits that electoral institutions influence the emergence of within-system groups, which seek policy changes, but do not influence the emergence of anti-system groups, which seek a complete overthrow of the existing regime and government. The study finds that within-system groups are significantly less likely to emerge in democracies that have a proportional representation system and higher levels of district magnitude, while neither of these factors affects the emergence of anti-system groups.

Abstract This article examines the electoral impact of spillover effects in local campaigns in Britain. For the first time, this is applied to the long as well as the short campaign. Using spatial econometric modelling on constituency data from the 2010 general election, there is clear empirical evidence that, in both campaign periods, the more a party spends on campaigning in constituencies adjacent to constituency i, the more votes it gets in constituency i. Of the three major political parties, the Liberal Democrats obtained the greatest electoral payoff. Future empirical analyses of voting at the constituency scale must, therefore, explicitly take account of spatial heterogeneity in order to correctly gauge the magnitude and significance of factors that affect parties' parliamentary performance.

Abstract Under evaluative voting, the voter freely grades each candidate on a numerical scale, with the winning candidate being determined by the sum of the grades they receive. This paper compares evaluative voting with the two-round system, reporting on an experiment, conducted during the 2012 French presidential election, which attracted 2,340 participants. Here we show that the two-round system favors “exclusive” candidates, that is candidates who elicit strong feelings, while evaluative rules favor “inclusive” candidates, that is candidates who attract the support of a large span of the electorate. These differences are explained by two complementary reasons: the opportunity for the voter to support several candidates under evaluative voting rules, and the specific pattern of strategic voting under the two-round voting rule.

This paper explores the role played by job precariousness in political orientations, and examines the extent to which job precariousness could represent a new political division in Italian society. We have investigated the explanatory role of job precariousness for political orientations and analysed its interaction with the declining traditional cleavages (territory, class, religion). Based on a national sample of 15,000 workers, our results provide some evidence that job precariousness is a social variable exerting a significant impact on political orientations. Furthermore, we found that different conditions of job precariousness, such as temporary work and unemployment, affect political attitudes in different ways. Finally, our evidence suggests that the relationship between job precariousness and political orientations is significantly influenced by territory and class.

Two new studies challenge the prevailing consensus that proportional representation (PR) systems produce greater ideological congruence between governments and their citizens than majoritarian ones. This has led to what has become known as the ‘ideological congruence controversy’. G. Bingham Powell claims to resolve this controversy in favour of PR systems. Specifically, he argues that the results from the two new studies are based on an anomalous decade and that PR systems generally do produce greater government congruence. In addition, he also asserts that PR systems exhibit less variability in government congruence. In this article, the empirical evidence for these two claims is re-evaluated using exactly the same data as employed by Powell. The analysis indicates that although PR systems produce better and more consistent representation in the legislature, they do not hold an advantage when it comes to representation at the governmental level.