Fundamentals

Limited Constituent Power: What It Means and What Its Limits Are

By Daniel Sardá · Published on June 08, 2026 · Updated on June 11, 2026

6 min read1,187 words

Constituent power does not always face the same limits: amendment power is legally bounded, while the limits on original constituent power remain debated.

Speaking of limited constituent power means arguing that the authority to create or amend a constitution is not necessarily a license to decide anything in any way. But the answer depends on which power is acting and what kind of limit is being discussed.

The power that amends an existing constitution is bound by the competences and procedures that constitution sets out. By contrast, when an original constituent power seeks to found a new order, there is a doctrinal dispute: for some, it admits no internal legal limits; for others, it must respect higher requirements tied to human rights, democracy, or peremptory norms.

Key idea: asking whether constituent power is limited first requires identifying whether we are talking about original constituent power or amendment power.

Constituent power and constituted powers

Constituent power establishes the fundamental rules of a political community: it creates or redefines the constitution, distributes competences, and sets the framework within which public authorities will act.

By contrast, constituted powers exist because the constitution creates them. Parliament, the government, and the courts receive bounded powers; they cannot legitimately expand their own competence without respecting the higher rules that organize them.

That difference explains why constituent power occupies a singular position. It is not just another public authority. But recognizing its foundational character does not settle whether it can act without constraints. The difficulty is precisely how to limit the authority that defines everyone else's limits.

The problem lies at the core of constitutionalism understood as a limit on political power: a constitution does not merely organize authorities; it also seeks to prevent public force from depending on the momentary will of those who govern.

Original and derivative constituent power

The decisive distinction separates two forms of constituent action.

Original constituent power founds a new constitutional order. It does not receive its authority from the prior constitution, because its very purpose is to replace that framework. It may arise after independence, political rupture, or a founding process.

Derivative constituent power, also called amendment power, modifies an existing constitution through the competences that constitution authorizes. Its authority is not original: it derives from the order it seeks to change.

For that reason, derivative power is legally limited. It must respect requirements such as supermajorities, successive readings, referendums, deadlines, or reserved competences. If it ignores those conditions, the amendment may be invalid under the constitutional system itself.

There may also be a difference between amending and replacing. An amendment alters parts of the existing order; a replacement changes its defining elements. The boundary between the two is not always clear and depends on each legal system, but it helps prevent a limited amendment power from becoming, by mere declaration, a power to remake everything.

Useful distinction: derivative power can change the constitution, but it receives both its ability to act and its limits from that constitution.

What kinds of limits can exist

Not all limits have the same source or produce the same consequences. It is useful to distinguish at least four categories:

• Procedural: they require certain majorities, readings, consultations, or stages before a change can be approved.
• Temporal: they block amendment during certain periods or under specific circumstances.
• Substantive: they protect content that cannot be altered through the ordinary amendment procedure.
• Factual: they arise from political, social, economic, and institutional conditions that make a decision unworkable, even if no rule expressly forbids it.

The first three can operate as legal limits on derivative power. A well-known example of an express substantive limit is Article 79(3) of the German Basic Law, which excludes certain protected principles from amendment. Such clauses, sometimes called eternity clauses or unamendability clauses, show that a constitution can authorize modification without allowing unrestricted transformation.

But an unamendable clause usually limits the amendment mechanism provided by that constitution. By itself, it does not prove that it is impossible to found a new order through original constituent power. Nor does it end the controversy: protecting fundamental principles can restrain abuse, but excessive rigidity can freeze institutions or shift decisive political choices to judges.

Factual limits raise a different issue. Even a power considered legally unlimited is not materially omnipotent. It needs support, institutional capacity, and some degree of compliance. It may proclaim a new constitution, but it cannot guarantee by words alone that society will accept it or that its institutions will function.

The dispute over the limits of original constituent power

The classic thesis holds that original power is not limited by the prior constitutional order. If it had to obey the rules of the order it replaces, it would no longer be truly original. From this perspective, there may be political or moral constraints, but no internal legal limits capable of invalidating its action.

Another current argues that the founding character of this power does not make it absolute. Human rights, democratic principles, and peremptory norms of international law are invoked as higher limits. This position tries to prevent a majority or a victorious force from using constitutional language to justify the elimination of basic freedoms.

The controversy is not merely terminological. It also asks who can enforce those limits and with what authority. Saying that a decision is unjust or illegitimate does not automatically show that a court can annul it. Likewise, a formally valid decision may lack political legitimacy or violate principles that justify a deep critique.

That is why it helps to separate four questions: what can be done in material terms, what the law in force allows, what an institution can control, and what is legitimate. Confusing them produces categorical answers that hide the real disagreement.

Warning: calling a decision “constituent” does not make it legitimate, but asserting a higher limit does not by itself resolve who can apply it.

Why it matters to limit constituent power

This debate matters because constituent decisions determine the rules under which power will be exercised for years. They can protect rights, secure separation of powers, and create checks; they can also concentrate authority and weaken the guarantees meant to contain it.

From a classical liberal perspective, the founding moment should not become an exception that allows unrestricted control over individual liberty. A constitution is of little use as a limit if whoever invokes popular sovereignty can suspend rights, eliminate checks, or extend their rule without facing any restraint, which is the opposite of a government of laws.

At the same time, treating every existing principle as unamendable can prevent necessary corrections and close peaceful avenues for change. Limits need clear justification, legitimate procedures, and caution toward those who would use them to preserve privilege or exclude citizens.

In short, it is possible to speak of limited constituent power, but not as a single formula. Amendment power is legally limited by the order that grants it competence. Original power always faces factual limits and legitimacy requirements, while the existence and enforceability of its legal limits remain a contested doctrinal question. That distinction lets us defend limits on power without pretending the constitutional debate is already settled.