Fundamentals

What Liberal Constitutionalism Is and How It Limits Power

By Daniel Sardá · May 03, 2026

In this article

Liberal constitutionalism is the institutional doctrine according to which political power is legitimate only when it is subject to higher limits: a Constitution, individual rights, separation of powers, the rule of law, equality before the law, due process, judicial independence and real checks.

In simple terms: liberal constitutionalism means government cannot do everything, even when it has votes, laws, judges, a parliamentary majority or constitutional language on its side.

It is not merely having a written Constitution. A country can have an extensive constitutional text, elections, courts, parliament and catalogues of rights, and still lack liberal constitutionalism if power can change rules at convenience, capture judges, persecute dissidents or turn rights into revocable permissions.

Key idea: a Constitution protects liberty only when it truly limits power. If it does not, it can become authoritarian decoration or a legal instrument for concentrating power.

From a classical liberal perspective, liberal constitutionalism is an architecture of defense against arbitrariness. Its function is not to venerate a document, but to protect concrete persons against the state, majorities, parties, judges, officials and any power that attempts to act without limits.

What liberal constitutionalism is

Liberal constitutionalism is a way of organizing and limiting political power.

Its starting point is that public authority must act under higher rules. Those rules define competences, recognize rights, establish procedures, distribute functions and make it possible to control abuses.

The Constitution, in this sense, is not only a national symbol. It is a higher norm that must limit the legislature, the executive, judges, officials, majorities and even the constitutional amendment process itself.

The distinction matters for one reason: political power concentrates legal coercion. It can legislate, sanction, collect taxes, regulate, expropriate, judge and use public force. That is why it needs limits that do not depend on the ruler’s goodwill.

Liberal constitutionalism answers that need with a basic idea: power must be subject to rights, rules and checks before it acts against the citizen.

Written Constitution vs effective constitutionalism

Having a written Constitution is not enough.

A Constitution can organize offices, create institutions, declare rights and use solemn language. But if those rights cannot be enforced, if judges obey the government, if the majority can eliminate checks and if the executive governs by permanent decree, the text does not truly limit power.

That is why two things should be separated.

A Constitution as a document can exist in almost any regime. There can be a constitutional text in liberal democracies, authoritarian regimes, electoral autocracies or governments with captured institutions.

Effective constitutionalism, by contrast, requires that the text function as a limit. It must prevent power from violating rights, changing rules in its favor, capturing courts or using legal procedures to destroy liberty.

Put differently: liberal constitutionalism begins when the Constitution stops being ornament and becomes a real barrier against power.

Higher rules and constitutional supremacy

Liberal constitutionalism needs higher rules.

Constitutional supremacy means the Constitution stands above ordinary laws, decrees, administrative acts and decisions by officials. No authority should be able to ignore it when it becomes inconvenient.

This has three consequences.

First, defined competences. Each organ of the state must know what it may and may not do. An executive should not legislate without limits; a legislature should not punish concrete persons through tailor-made laws; a judge should not replace the Constitution with personal preferences.

Second, mandatory procedures. Power must act through known forms: deliberation, publication, voting, reasoned decisions, defense, review and control. Form is not bureaucratic whim; it protects citizens against improvised or secret decisions.

Third, limited amendment. Constitutions can change, but the process of change should not become an excuse to erase rights, eliminate checks, capture judges or perpetuate rulers.

The important question is this: does the Constitution limit power, or does power use the Constitution as available material?

Individual rights as limits on power

Individual rights are the moral core of liberal constitutionalism.

They are not concessions from the ruler or favors granted by a majority. They are limits on political power and guarantees for concrete persons.

Among them are:

Liberal constitutionalism protects those rights against the executive, but also against the legislature, captured judges, bureaucracies, electoral majorities and abusive constitutional reforms.

The point is crucial: a majority can vote for an unjust law. A parliament can approve arbitrary restrictions. A constituent assembly can attempt to eliminate checks. That is why rights cannot depend only on the political will of the moment.

Separation of powers and institutional checks

Separation of powers is a central piece of liberal constitutionalism.

The legislative power creates laws. The executive administers and executes. The judiciary judges, resolves controversies and controls legality. Dividing those functions prevents one authority from making the law, applying it and deciding whether it abused it.

But separating functions is not enough. Checks and balances are also necessary.

A healthy constitutional system needs cross-checks: legislative oversight, judicial review, budget approval, appointment procedures, political responsibility, transparency, oversight bodies and mechanisms for challenging abuses.

Separation of powers does not seek to paralyze the state. It seeks to prevent the state from becoming one will without review.

The problem appears when separation is formal but not real. There is a Congress, but it acts as a stamp for the executive. There are courts, but they obey the party. There is a prosecution office, but it pursues adversaries and ignores allies. There is a Constitution, but no one can enforce it against power.

Rule of law and real legality

The rule of law is another essential component.

It means government is also subject to law. It does not act by whim, secret order, retroactive punishment or discretionary decision. It must use public, general, relatively stable and understandable rules applied with due process.

But here there is a decisive distinction: legality is not the same as the rule of law.

An abuse can be formalized in a law. A persecution can have procedural appearance. Censorship can be presented as regulation. An arbitrary expropriation can be approved by decree. A political prison case can have a judicial file.

That is empty legalism.

The rule of law demands something stronger than “there is a norm.” It requires the norm to limit power, respect rights, be general, clear, prospective, applied equally and reviewable by independent judges.

Without that condition, law stops being a guarantee. It becomes a tool.

Judicial independence and constitutional review

Constitutional rights are weak if independent judges do not exist.

Judicial independence allows a person to invoke the Constitution against power. It allows laws, decrees, sanctions, expropriations, censorship, arbitrary detentions or abusive administrative acts to be challenged.

Constitutional review performs that function: it examines whether laws and acts of power respect the Constitution.

It may exist through constitutional courts, supreme courts, diffuse review, concentrated review or other institutional models. The design varies by country, but the liberal idea is constant: power should not be the final and uncontestable judge of its own limits.

That said, judicial independence does not mean unlimited government by judges.

Judges also exercise public power. They must act within competences, give reasons for decisions, respect procedures, apply general rules and be subject to institutional responsibility. Judicial independence protects against political pressure; it does not authorize judicial arbitrariness.

The balance is this: independent courts to restrain abuses of power, but courts limited by the Constitution, law, public reasoning and due process.

Nominal constitutionalism

Nominal constitutionalism appears when a Constitution exists but does not truly limit power.

There may be written rights, formal institutions and solemn discourse. But political practice works differently: the executive dominates, the legislature obeys, judges depend, prosecutors select enemies, oversight bodies remain silent and citizens cannot enforce their rights.

Karl Loewenstein distinguished among normative, nominal and semantic constitutions. The idea is useful because it shows that not every constitutional text operates in the same way.

A normative Constitution effectively limits power. A nominal Constitution may aspire to do so but fails to organize institutional reality. A semantic Constitution serves more to organize and legitimize the power of those who rule than to limit it.

Liberal constitutionalism needs a normative Constitution in practice, not merely solemn text.

Authoritarian constitutions and abusive constitutionalism

An authoritarian regime can have a Constitution.

It can have elections, courts, parliament, a catalogue of rights, the language of popular sovereignty and legal procedures. That does not make it liberal or constitutionalist in the strong sense.

Abusive constitutionalism occurs when constitutional mechanisms are used to weaken checks, capture institutions or perpetuate power. A reform may appear legal and, at the same time, destroy guarantees. A constituent assembly may invoke the people and concentrate power. A constitutional court may validate every executive decision.

Typical examples include:

The problem is not constitutional reform itself. Constitutions may need changes. The problem is using reform as a tool to eliminate the limits that protect everyone.

Empty legalism: when every abuse has legal form

Empty legalism is one of the most dangerous threats to liberal constitutionalism.

It consists of using laws, decrees, courts, procedures and legal language to cover arbitrariness. Power does not act outside law; it captures law so that abuse appears regular.

The difference is visible in practice.

A general law against fraud can protect rights. A law designed to close a critical media outlet cannot. A constitutional court can defend liberties. A captured court can validate censorship. An administrative procedure can organize an activity. An impossible procedure can become a tool of control.

The problem appears when legality stops limiting and starts serving as disguise.

That is why liberal constitutionalism does not settle for asking whether something is formally legal. It asks whether it respects rights, competences, due process, equality before the law, proportionality and independent control.

Constituent power and constituted power

Constituent power is the capacity to create or reform the constitutional order.

Constituted power is the set of institutions created by the Constitution: executive, legislature, judiciary, oversight bodies, administrative authorities and courts.

The distinction matters because some political currents use constituent power as if it were unlimited authorization. Under that view, a majority, an assembly or a leader invoking the people could remake everything without limits.

From the standpoint of liberal constitutionalism, that idea is dangerous.

Popular sovereignty should not become absolute sovereignty over concrete persons. Even constitutional reform should respect certain basic principles: individual rights, due process, pluralism, equality before the law, judicial independence and limits on power.

This does not mean the Constitution is untouchable. It means changing it should not become a shortcut for destroying the guarantees that make a free society possible.

Constitutional democracy vs unlimited democracy

Liberal constitutionalism defends constitutional democracy, not unlimited democracy.

Constitutional democracy allows rulers to be elected, but also limits what those rulers may do. A majority may win elections and legislate within the Constitution. It should not be able to censor, confiscate, persecute, capture judges or eliminate checks in order to perpetuate itself.

Unlimited democracy believes voting authorizes everything.

That error transforms the majority into absolute power. And absolute power remains dangerous even when elected.

Individual rights exist precisely to limit majorities and rulers. Freedom of expression protects unpopular opinions. Private property protects material independence. Due process protects even hated persons. Equality before the law prevents allies and adversaries from receiving different justice.

Voting legitimizes governments within rules. It does not make every abuse legitimate.

Liberal constitutionalism and limited government

Limited government is the ideal of political power with defined competences, effective checks and respect for rights.

Liberal constitutionalism is one of the architectures that makes that ideal possible.

It limits the state through a Constitution, separation of powers, the rule of law, fundamental rights, judicial independence, constitutional review, procedures and accountability.

It also limits state coercion. If the state can compel, prohibit, sanction, expropriate or use public force, that capacity must be subject to higher rules.

This does not mean the state does not exist. It means it cannot act as owner of society.

Limited government is not measured only by size. It is measured by competences, checks, rights, legality and real limits on power.

Liberal constitutionalism, property and legal certainty

Private property is one of the guarantees that liberal constitutionalism must protect.

Not only for economic reasons. Property makes possible personal independence, autonomous civil society, investment, contracts, planning, independent media, associations and resistance against political dependence.

When property depends on power, liberty becomes fragile.

Liberal constitutionalism requires any affectation of property to be subject to general law, legitimate cause, due process, judicial control, proportionality and compensation when applicable.

Legal certainty performs a similar function. It allows people to know the rules, plan, contract and defend rights. Without legal certainty, citizens live dependent on changing decisions by power.

Arbitrariness destroys freedom not only when it imprisons. It also does so when it prevents people from planning their lives.

Liberal constitutionalism in Venezuela and Latin America

In Venezuela and Latin America, liberal constitutionalism matters because the region has had abundant written constitutions and, at the same time, recurring problems of concentrated power.

Regional history shows extensive constitutions, recurring reforms, caudillismo, hyper-presidentialism, states of emergency, dependent justice, subordinated parliaments, captured oversight bodies and formal rights without effective enforcement.

This does not mean all countries or periods are the same. Nor does it turn the topic into a current-affairs report.

The broader institutional lesson is this: a Constitution is not enough if it does not limit real power.

A text can promise freedom of expression while regulators and courts punish critical media. It can recognize property while the administration expropriates without guarantees. It can declare judicial independence while appointments and budgets depend on the executive. It can proclaim popular sovereignty while a majority destroys alternation and checks.

That is why Latin America does not need only solemn constitutions. It needs effective limits: independent judges, enforceable rights, real separation of powers, the rule of law, equality before the law, defensible property and civil society capable of controlling power.

Common mistakes about liberal constitutionalism

“Having a Constitution means having liberal constitutionalism”

No. A written Constitution can exist without real limits. Liberal constitutionalism requires enforceable rights, separation of powers, the rule of law and judicial independence.

“A long Constitution protects more liberty”

Not necessarily. A broad catalogue of rights can be symbolic if there are no independent judges, real procedures and limits on power.

“The majority can reform any limit”

Not in a constitutional democracy. Majorities govern within rules and rights that they should not be able to destroy in order to concentrate power.

“Legality and the rule of law are the same thing”

No. Formal legality can conceal abuses. The rule of law requires general, public, stable, non-arbitrary rules applied with due process.

“Independent judges are anti-democratic”

No. They protect the Constitution and rights against abuses by rulers or majorities. But judges must also act under legal limits.

“Rights exist because the state grants them”

From classical liberalism, individual rights are limits on power, not revocable favors from the ruler.

“A constituent assembly can solve any institutional problem”

Not always. A constituent assembly can reform institutions, but it can also be used to concentrate power, capture courts or eliminate checks.

“Liberal constitutionalism is only a legal technique”

No. It is a political architecture of freedom: it protects concrete persons against arbitrary coercion, unlimited majorities and discretionary power.

Frequently asked questions about liberal constitutionalism

What is liberal constitutionalism in simple terms?

It is the idea that political power must be limited by an effective Constitution, individual rights, the rule of law, separation of powers, independent judges and real checks.

What is the difference between a Constitution and constitutionalism?

The Constitution is the text or higher norm. Constitutionalism is the institutional practice that turns that text into an effective limit on power.

Does having a written Constitution mean having liberal constitutionalism?

No. There can be a written Constitution without enforceable rights, independent judges or real separation of powers.

What is the relationship between liberal constitutionalism and the rule of law?

The rule of law is a central component of liberal constitutionalism: it requires general rules, real legality, due process, equality before the law and control against arbitrariness.

What is the relationship between liberal constitutionalism and separation of powers?

Separation of powers distributes functions among the legislature, executive and judiciary to prevent one authority from concentrating legislation, administration and justice.

What is the relationship between liberal constitutionalism and individual rights?

Individual rights are limits on political power. They protect freedom of expression, association, conscience, property, due process and equality before the law.

What is nominal constitutionalism?

It is the situation in which a Constitution exists, but its limits do not truly function in political and institutional practice.

What is an authoritarian constitution?

It is a text that organizes and legitimizes concentrated power, even if it uses the language of rights, elections or courts.

What is empty legalism?

It is the use of laws, procedures and legal appearance to cover arbitrariness, persecution, privileges or concentration of power.

What is unlimited constituent power?

It is the idea that whoever creates or reforms the Constitution can eliminate any limit. For liberal constitutionalism, that idea threatens basic rights and checks.

Can a democratic majority violate liberal constitutionalism?

Yes. A majority can attempt to censor, confiscate, capture judges or eliminate checks. That is why democracy needs a Constitution and rights.

Why is judicial independence important?

Because without independent judges, constitutional rights cannot be enforced against political power.

What role does constitutional review play?

It allows laws, decrees or public acts to be reviewed to verify whether they respect the Constitution and rights.

Why does this topic matter in Venezuela and Latin America?

Because the region has had many written constitutions, but also hyper-presidentialism, caudillismo, dependent justice and formal rights without effective protection.

Without effective limits, the Constitution can serve power

Liberal constitutionalism does not mean worshiping a text or believing that a written Constitution, by itself, solves political problems.

It means something more demanding: turning the Constitution into a real limit on power.

That limit requires individual rights, separation of powers, the rule of law, equality before the law, judicial independence, constitutional review, amendment procedures and legal certainty.

The alternative is not between a rigid Constitution and unlimited popular power. That is a false dichotomy. The real alternative is power subject to limits or power that uses the Constitution to escape them.

A free society needs governments capable of acting, but incapable of appropriating people’s lives, property, conscience, speech and rights. It needs majorities that can govern, but not destroy the rules that protect those who dissent. It needs independent judges, but also judges limited by law and public reasons.

Ultimately, liberal constitutionalism protects a simple idea: no political power should be the absolute judge of its own limits.

Sources consulted

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