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The Oxford Handbook of Israeli Politics and Society, edited by Reuven Y. Hazan, Alan Dowty, Menachem Hofnung, and Gideon Rahat. Oxford: Oxford University Press, 2021. 724 pages. $149.99.

This article takes a closer look at how presidential elections affect the fragmentation of the legislative party system. It reviews the theory and conventional empirical modelling strategy; identifies some drawbacks to this strategy and suggests solutions; and then conducts an empirical investigation of the implications of this critique by combining replication data from Golder (2006) with new data on the key variables measuring the presidential coattails. Fortuitously, the literature's findings about the shadow cast by presidential elections, usually known as the presidential coattails, are relatively robust. However, important differences emerge on the margins, such as regarding the effect of midterm elections. Moreover, this article demonstrates that subsequent presidential elections, like concurrent and preceding ones, cast shadows, too. It also demonstrates that the conventional modelling strategy underestimates the presidential coattails.

How do changes in society that increase the heterogeneity of the citizenry shape democratic party systems? This book seeks to answer this question. It focuses on the key mechanism by which social heterogeneity shapes the number of political parties: new social groups successfully forming new, sectarian parties. Why are some groups successful at this while others fail? Drawing on cross-national statistical analyses and case studies of Sephardi and Russian immigration to Israel and African American enfranchisement in the United States, this book demonstrates that social heterogeneity does matter. However, it makes the case that to understand when and how social heterogeneity matters, factors besides the electoral system – most importantly, the regime type, the strategies played by existing parties, and the size and politicization of new social groups – must be taken into account. It also demonstrates that sectarian parties play an important role in securing descriptive representation for new groups

This article explores how the party-defined dimensionality of political competition relates to the number of parties competing in legislative elections. It demonstrates that a mathematical relationship between the number of electoral parties and the literature's concept of dimensionality follows from the variables' definitions; conversely, it argues that exploring the relationship between the number of electoral parties and a different concept of dimensionality conveys new information. Hence, it first argues that how we conceptualize dimensionality matters. Redirecting attention to the latter relationship, it then hypothesizes that party system fragmentation will go hand-in-hand with the appearance of new conflicts on the political agenda when the electoral system is permissive. Using a time-series cross-sectional dataset that includes at its core a new measure of dimensionality, it finds reasonable support for the hypotheses; however, at the elite level, new parties are found to play less of a role in politicizing new conflicts than expected. [Reprinted by permission of Sage Publications Ltd., copyright holder.]

This article explores how the party-defined dimensionality of political competition relates to the number of parties competing in legislative elections. It demonstrates that a mathematical relationship between the number of electoral parties and the literature's concept of dimensionality follows from the variables' definitions; conversely, it argues that exploring the relationship between the number of electoral parties and a different concept of dimensionality conveys new information. Hence, it first argues that how we conceptualize dimensionality matters. Redirecting attention to the latter relationship, it then hypothesizes that party system fragmentation will go hand-in-hand with the appearance of new conflicts on the political agenda when the electoral system is permissive. Using a time-series cross-sectional dataset that includes at its core a new measure of dimensionality, it finds reasonable support for the hypotheses; however, at the elite level, new parties are found to play less of a role in politicizing new conflicts than expected.

This article explores the issues surrounding the operationalization and measurement of social cleavages in a large-N context from the perspective of the party systems literature. It first highlights the difficulty of measuring the concept, which it argues has impeded hypothesis testing, and suggests strategies for improving upon existing measures. It then demonstrates that the conclusions we draw about well-known hypotheses linking social cleavages to the number of electoral parties in legislative elections depend upon the measure we employ. Hence, the article makes the case that how we measure social cleavages matters. [Reprinted by permission of Sage Publications Inc., copyright 2008.]

This article explores the issues surrounding the operationalization and measurement of social cleavages in a large- N context from the perspective of the party systems literature. It first highlights the difficulty of measuring the concept, which it argues has impeded hypothesis testing, and suggests strategies for improving upon existing measures. It then demonstrates that the conclusions we draw about well-known hypotheses linking social cleavages to the number of electoral parties in legislative elections depend upon the measure we employ. Hence, the article makes the case that how we measure social cleavages matters.