Japan has long been regarded as a consolidated parliamentary democracy since the post–World War II constitutional reforms, a status reaffirmed by its classification as a “liberal democracy” in the V-Dem Democracy Report 2025 and as a “full democracy” in the Economist Intelligence Unit’s 2024 Democracy Index. Nevertheless, democratic backsliding—an increasingly prevalent phenomenon over the past decade—often unfolds gradually and from within institutional frameworks, raising concerns that one of Asia’s most enduring democracies may be vulnerable to such erosion.

Institutional Context: Democracy Under Dominance

Japan’s parliamentary system vests executive authority in the cabinet, with ministers appointed by the prime minister. Formally, the National Diet remains the supreme organ of state power and retains the authority to dismiss the cabinet, constituting a central institutional check on executive power. Yet institutional design operates within political realities. 

Since 1955, the Liberal Democratic Party (LDP) has governed almost uninterruptedly, a dominance that has intensified under Prime Minister Sanae Takaichi. Following a landslide snap election securing 310 of 465 lower-house seats, the LDP now approaches a constitutional supermajority. With potential coalition support from the Japan Innovation Party, this margin could expand further, accelerating long-contested reforms.

While single-party dominance is not inherently undemocratic, when paired with weak opposition capacity, it raises a central question: Does sustained dominance alongside expansive constitutional and security reforms indicate democratic erosion, or remain compatible with Japan’s formal institutions and popular consent?

Rewriting the Rules: Article 9 and Emergency Powers

Following the election, Takaichi announced plans to accelerate constitutional revision, centering on two proposals: revising Article 9 and introducing an Emergency Clause. Though framed as responses to regional security threats, both raise concerns regarding democratic erosion.

Article 9, adopted during the U.S. occupation, renounces war and prohibits the maintenance of armed forces. The proposed amendment would retain this renunciation while explicitly recognizing the Self-Defense Forces (SDF), resolving a long-standing legal ambiguity by transforming a de facto military into a de jure one. While proponents cite rising pressures from China and North Korea, Article 9 has also constrained executive discretion in security policies. Its revision signals possible re-militarization by lowering thresholds for the use of force and weakening constitutional grounds for opposition oversight.

These concerns are amplified by the proposed Emergency Clause, which would allow the prime minister to declare emergencies and empower the cabinet to issue law-equivalent ordinances without prior National Diet approval. As How to Lose a Constitutional Democracy argues, democratic erosion often occurs through constitutional retrogression—incremental, legal changes that concentrate executive power and exploit crises to bypass checks and balances. The clause’s vague definition of “emergency” exemplifies this risk by granting broad discretion with limited oversight.

Together, Article 9 revision and the Emergency Clause operate as complementary mechanisms of potential democratic erosion: one expands the scope of permissible state coercion, while the other weakens legislative constraint on executive action.

Anti-Espionage Legislation and Information Control

Proposed anti-espionage legislation represents another channel through which democratic erosion may occur. Japan’s 2013 Act on the Protection of Specially Designated Secrets already imposes severe penalties for unauthorized disclosure and relies on broadly defined categories covering defense, diplomacy, counter-espionage, and counter-terrorism. The proposed legislation would go further, expanding surveillance authority and increasing criminal liability in academia. 

Critics have documented its chilling effect on whistleblowing. By granting the government broad discretion to classify information and impose harsher penalties on leakers of “national secrets,” the law restricts access to information essential for public oversight, weakening citizens’ capacity to hold the government accountable—an archetypal feature of constitutional retrogression through information control.

Institutional context heightens these concerns. In the LDP executive lineup inaugurated in October 2025, Takaichi appointed Takayuki Kobayashi, a former minister of economic security with similarly hawkish views, as chair of the Policy Research Council. Combined with overwhelming legislative dominance, this concentration aligns with Ozan Varol’s concept of stealth authoritarianism: the use of formally legal mechanisms to insulate executive action from scrutiny while maintaining democratic appearances.

International observers have echoed these concerns. Human Rights Watch has cautioned that espionage legislation must comply with the International Covenant on Civil and Political Rights and include narrowly tailored definitions and robust safeguards. Without such protections, security laws risk becoming another incremental yet consequential constraint on democratic freedoms.

Democracy or Dominance? Evaluating Japan’s Political Health

Undeniably, Japan’s democratic record includes episodes of executive overreach. In 2014, Prime Minister Shinzo Abe reinterpreted Article 9 through a cabinet decision to permit collective self-defense, circumventing the formal amendment process mandated by Article 96. Although legally permissible, this move weakened constitutional norms and exemplified “constitutional hardball”—the exploitation of legal gray areas to bypass established constraints.

By contrast, Takaishi’s pursuit of constitutional revision through Article 96 is procedurally legitimate. Electoral legitimacy further complicates claims of democratic erosion. Following Takaichi’s assumption of office, public approval surged from below 40 percent to approximately 70 percent across major national surveys, including those conducted by Sankei Shimbun, Yomiuri Shimbun, and Nikkei. Scholars reason that the LDP has consistently adapted to voter priorities, prompting Japanese citizens to favor the stability of a known governing actor so long as it continues to deliver. Amid the current prolonged economic stagnation, citizen demands for stability have intensified—conditions under which Sanae Takaichi has positioned herself as an ideal figure.

Guardrails at Risk: Preserving Japan’s Democratic Future

Japan remains a democracy—but one increasingly exposed to incremental erosion. The developments examined here represent early warning signs driven by executive aggrandizement in security policy, emergency governance, and information control. This pattern aligns less with democratic collapse than with what theorists describe as the gradual weakening of democratic norms. As Steven Levitsky and Daniel Ziblatt argue, democratic stability depends not only on formal institutions but also on informal norms of mutual toleration and institutional forbearance. When governments exploit legal mechanisms to maximize power or bypass established constraints, these democratic guardrails weaken even as elections remain competitive.

Preserving Japan’s democratic resilience, therefore, requires sustained vigilance from citizens, opposition parties, journalists, and civil society to contest overreach, demand transparency, and uphold constitutional restraint.