The editors and authors provide a brief postscript about the contributions and the legacy of Susan Pharr for each author and the field of Japanese politics.

More than 50 studies have examined the programmatic incumbent support hypothesis, which posits that once enacted, programmatic policies increase electoral support for the incumbent. Despite the careful attention to causal inference in this work, empirical findings have been strikingly inconsistent. We make the case that these inconsistent results are likely explained by incumbents' strategic responses to the enactment of a programmatic policy. Specifically, incumbents have good reasons to distribute different amounts of non-programmatic goods to voters who do and do not receive a programmatic policy. To examine this conjecture, we turn to the case of Japan, where municipalities receive allocations of non-programmatic goods and vary in their eligibility for a programmatic policy (a snow subsidy) according to plausibly exogenous factors. Using a geographic regression discontinuity design, we find that municipalities receiving the programmatic policy receive systematically more non-programmatic goods than municipalities that do not.

Why study Japan? Research on contemporary Japanese politics and foreign policy faces headwinds from the relative geopolitical decline of Japan and scholars skeptical about single-country studies. An overview of Japanese politics publications in English-language journals over the past four decades suggests the subfield remains active and robust. However, there is still room to grow. I argue that Japan is a harbinger state, which experiences many challenges before others in the international system. As such, studying Japan can inform both scholars and policymakers about the political challenges other countries are likely to confront in the future. In turn, scholarship on Japan offers a critical opportunity to develop theoretical insights, assess early empirical evidence, and offer policy lessons about emerging challenges and the political contestation surrounding them. I consider the reasons why Japan so often emerges as a harbinger across issue areas and suggest areas for ongoing scholarly attention.

In 2009, after decades of single party rule under the Liberal Democratic Party (LDP), Japan had its first taste of a real alteration of power. However, just 3 years later, the LDP regained control of government with no significant challenger in sight. Historically, LDP dominance is a common tale, but its resurgence in recent years poses a significant puzzle in Japanese politics. What exactly has contributed to the LDP's return to power? In the years that have passed, the LDP's strength has come from a combination of cash, clientelistic networks, and strong candidates, but recent research has found that Japanese politics has become more programmatic and party-focused. While LDP dominance since its return to power in 2012 can be attributed in part to its candidates, I find that the appeal of the party label has played a large role in securing the LDP's large majorities.

The Liberal Democratic Party (LDP) has dominated Japanese politics since its foundation in 1955. The party's ability to support the interests of small farmers and its commitment to the middle-class through redistributive economic policies have been regarded as among the primary factors leading to its prolonged hegemony. Yet, the LDP has occasionally relied on non-economic political appeals addressing rather conservative issues such as Japan's military force and the country's traditional values. These appeals have significantly intensified under the premiership of Junichirō Koizumi and his successor Shinzō Abe, whose authoritative leadership styles and nationalist agendas reveal the relevance of non-economic values. This study focuses on the role of authoritarian values in shaping vote choice in twenty-first century Japan. Previously emphasized in The Japanese Voter, the authority–liberty dimension has gradually lost prominence in recent models of voting behavior, where socio-economic factors have had a central role in explaining vote choice. Our inquiry places new emphasis on this value dimension and provides evidence for the enduring relevance of individual authoritarian dispositions in models of vote choice.

Can governments elected under mixed-member majoritarian (mmm) electoral systems use geographically targeted spending to increase their chances of staying in office, and if so, how? Although twenty-eight countries use mmm electoral systems, scant research has addressed this question. The authors explain how mmm’s combination of electoral systems in two unlinked tiers creates a distinct strategic environment in which a large party and a small party can trade votes in one tier for votes in the other tier in a way that increases the number of seats won by both. They then explain how governing parties dependent on vote trading can use geographically targeted spending to cement it. These propositions are tested using original data from Japan (2003–2013) and Mexico (2012–2016). In both cases, municipalities in which the supporters of governing parties split their ballots as instructed were found to have received more money after elections. The findings have broad implications for research on mmm electoral systems, distributive politics, and the politics of Japan and Mexico.

As the Cold War prompted anxieties throughout Asia about the status of postcolonial state-building and decolonization, the possibility of friendship and cooperation between China and India despite their differing political and economic systems inspired hope and political repercussions far beyond their borders. This paper reveals how Japanese commenters, in their analysis of Sino–Indian friendship and both countries' respective political trajectories, saw the two countries as providing a rubric for a new type of politics. Utilizing an array of published, unpublished, and archival sources, I will study how diverse individuals, from the historian Uehara Senroku to burakumin activist Jiichirō Matsumoto, believed that Sino–Indian friendship, unlike the failed project of Japanese imperialism, could unite “Asia” in its struggle against imperialism amid the Cold War and accelerating decolonization. In following this model, they also believed that Japan could escape American hegemony and become “Asian” again. Japanese analyses of “China–India” as offering an “Asian” recipe for overcoming imperialism and navigating bloc politics help showcase how ideas of Asia continued to serve as a space for contemplating political possibilities during the early Cold War, transforming Japan from the region's former tutor to its pupil.

In this article I examine changes in the election manifestos of Japan's Liberal Democratic Party. While the existing literature agrees that the LDP's policy platform has changed considerably since the introduction of the new election system in the 1990s, their analysis focuses on material policies such as pork barrel and welfare. Postmaterialist policies such as environmental protection have hardly been discussed, even though they have been relevant since pollution swept progressive mayors into power in the 1960s. I examine election platforms from 1956 through 2013, and argue that the LDP has carefully adjusted its policy mix by putting a greater emphasis on postmaterialist policies. My analysis also shows that while electoral reform has had an impact on the policy balance between postmaterialist and materialist policies as well as clientelist and programmatic policies, these changes are not linear, but vary from decade to decade.

Although party polarization is one of the most significant focal points in the study of contemporary US politics, a limited number of studies have examined its theoretical implications for other countries. In addition, a great deal of effort has been made in the study of the changes in voting bases (i.e., constituencies or interest groups). However, little attention has been given to the features of party organization. In this study we look at the process of polarization between two major parties in Japan in recent years and analyze the way Japanese parties took an alternative path to polarization. We argue that party polarization can be caused by the strategic position-taking of the party executive in addition to the centralization of the party organization.

The Democratic Party of Japan (DPJ) came to power in 2009 promising significant transportation sector reform, but it has struggled to implement its proposals. I argue that the DPJ's initiatives faltered due to the legacy of “efficiency clientelism.” Historically, Japanese transportation policy combined two imperatives: (1) encourage efficiency by raising the cost of energy-inefficient transportation, and (2) redistribute benefits to supporters of the incumbent Liberal Democratic Party (LDP). Because of the legacy of efficiency clientelism, DPJ campaign pledges—designed to appeal broadly to the general public by reducing transportation costs—ran up against the prospect of sharp declines in revenues and energy efficiency. Efficiency clientelism was well suited to political realities in Japan prior to the 1990s, but recent developments have undercut its viability. This raises profound questions about the sustainability of Japan's energy efficiency achievements.