Judicial Review: The Quiet Arbiter of Government Power
An overview of how judicial review functions to keep branches of government in check, its history, mechanisms, and global variations.

Introduction
Judicial review is a legal process that allows courts to assess the constitutionality of actions taken by the executive and legislative branches. It is a cornerstone of the system of checks and balances that underpins many modern democracies. While the term is most often associated with the United States, the concept exists in various forms around the world, reflecting different constitutional traditions and legal cultures.
Historical Roots
The idea that courts should have the power to invalidate government actions has deep historical roots. In ancient Rome, jurists could challenge imperial decrees, and in medieval England, the Magna Carta established that the king was subject to the law. The modern concept crystallised in the early 20th century, most famously in the U.S. Supreme Court case Marbury v. Madison (1803), which asserted the Court’s authority to review executive and legislative acts. This precedent laid the groundwork for constitutional courts in other jurisdictions, such as the German Federal Constitutional Court (1949) and the Constitutional Court of South Africa (1994).
Mechanisms of Judicial Review
Substantive Review
In a substantive review, a court examines whether a law or executive action aligns with constitutional principles. If the court finds a violation, it can strike down the law or order the executive to modify its behaviour. This is the most common form of review in written constitutions.
Procedural Review
Procedural review focuses on whether the correct legal procedures were followed when a law was enacted or an executive decision was made. It ensures that due process, transparency, and accountability are upheld.
Interpreting Constitutional Texts
Judges often rely on textual analysis, original intent, and the evolving nature of society to interpret constitutional provisions. The balance between a rigid text and a living constitution approach varies by jurisdiction.
Impact on Governance
Judicial review serves several vital functions:
- Protecting Individual Rights – Courts can halt laws that infringe on fundamental freedoms such as free speech, privacy, and equal protection.
- Maintaining the Rule of Law – By holding the executive and legislature accountable, courts reinforce the principle that no one is above the law.
- Encouraging Deliberation – Knowing that their actions may be reviewed, lawmakers and executives often engage in more thorough deliberation before passing legislation or issuing directives.
- Stabilising Governance – Courts can resolve constitutional crises by clarifying ambiguities, thereby preventing prolonged political stalemates.
International Variations
Parliamentary Systems
In many parliamentary democracies, the judiciary’s power to review legislation is limited. For instance, the United Kingdom’s courts traditionally cannot strike down Acts of Parliament, relying instead on the doctrine of parliamentary sovereignty. However, the UK has embraced the European Convention on Human Rights, and the Supreme Court can issue declarations of incompatibility.
Constitutional Courts
Countries with written constitutions often establish dedicated constitutional courts. Germany’s Federal Constitutional Court, for example, can review laws before they are enacted, while South Africa’s Constitutional Court can review laws after they have entered into force.
Hybrid Models
Some nations blend elements of both systems. In Canada, the Supreme Court can review federal and provincial laws for constitutional compliance, but the doctrine of “pith and substance” limits its reach when laws fall within the jurisdiction of a lower level of government.
Challenges and Critiques
While judicial review is widely regarded as a safeguard, it faces several criticisms:
- Judicial Activism – Critics argue that judges may overstep their role by making policy decisions, effectively becoming a fourth branch of government.
- Democratic Legitimacy – As unelected judges exercise power over elected officials, questions arise about the democratic legitimacy of their decisions.
- Access to Justice – The complexity of constitutional litigation can limit access for ordinary citizens, raising concerns about equality before the law.
- Political Polarisation – In highly polarised societies, judicial review can become a flashpoint, with parties accusing the courts of bias.
Conclusion
Judicial review remains a vital mechanism for preserving the balance of power within governments. By providing a formal avenue for challenging unconstitutional actions, courts help maintain the rule of law, protect individual rights, and ensure that democratic institutions function as intended. Though variations in its application exist worldwide, the core principle-that no branch of government should operate beyond constitutional limits-continues to be a defining feature of modern governance.
References
- Civic Institutions Evergreen | civic-institutions-evergreen · primary
- United Nations | UN · primary