The Constitution of France is the founding document of the Fifth Republic, adopted on October 4, 1958. It creates a semi-presidential system in which a directly elected President shares executive power with a Prime Minister answerable to Parliament, defines what Parliament may legislate, and gives constitutional force to a broader set of rights and principles that reach back to the Revolution. It has been amended more than two dozen times since it took effect.
Why 1958
The Fourth Republic collapsed under chronic government instability and the political crisis of decolonization in Algeria. Over twelve years, France ran through more than twenty prime ministers, making sustained policy nearly impossible. General Charles de Gaulle was recalled to power with a mandate to draft a new framework.
His diagnosis was that Parliament had held too much power and the executive too little. The 1958 text deliberately reversed that, building a presidency with real authority over defense, foreign policy, and the functioning of state institutions while leaving the Prime Minister and Parliament in charge of most domestic legislation. That hybrid design is what people mean when they call the Fifth Republic semi-presidential.
What Counts as Constitutional Law
The 1958 articles are not the whole of French constitutional law. The Preamble incorporates older texts by reference and gives them the same legal weight as the Constitution itself. The 1789 Declaration of the Rights of Man and of the Citizen supplies core civil liberties, including freedom of expression, property rights, and the presumption of innocence.1Élysée. The Declaration of the Rights of Man and of the Citizen The Preamble of the 1946 Constitution adds social and economic protections for workers and families. In 2005, the Charter for the Environment joined the collection, embedding the precautionary principle and the polluter-pays principle.
Together these texts form the bloc de constitutionnalité, the constitutional block. A landmark 1971 Constitutional Council decision established that these referenced documents are enforceable law, not aspirational language, and any statute conflicting with any text in the block can be struck down. Rights from 1789, social guarantees from 1946, and environmental principles from 2005 all carry the same authority as the 1958 articles.
Several principles run through the document. The Republic defines itself as indivisible, secular, democratic, and social, under the motto Liberté, Égalité, Fraternité. Laïcité, the French form of secularism, requires that the state neither recognize nor fund any religion.2Gouvernement.fr. Freedoms and Prohibitions in the Context of Laicite Article 55 places duly ratified treaties above domestic legislation, provided the other party is also honoring the agreement, which is how obligations under EU law and international agreements override conflicting French statutes.3Refworld. Constitution of 4 October 1958
The Executive: President and Prime Minister
Executive power is split. The President is head of state, elected by direct universal suffrage for a five-year term renewable once. Winning requires an absolute majority; if no candidate clears that in the first round, the top two advance to a runoff two weeks later. Until the 2000 referendum, the presidential term was seven years, which regularly left the President out of phase with Parliament.
Presidential powers are substantial. Under Article 5 the President ensures the proper functioning of public authorities and the continuity of the state. Article 15 makes the President commander-in-chief of the armed forces. The President appoints the Prime Minister, presides over the Council of Ministers, negotiates treaties, and can dissolve the National Assembly to trigger new elections. That dissolution power carries one hard limit: no second dissolution within a year of the previous election.4Conseil constitutionnel. Constitution of 4 October 1958
The Prime Minister leads the government, directs domestic policy, and runs the ministries day to day. The President names the Prime Minister, but political reality does most of the choosing: the Prime Minister has to survive in the National Assembly, which can bring the government down through a vote of no confidence.
When the President and the parliamentary majority come from opposing camps, France enters cohabitation. It has happened three times since 1958, with the Prime Minister taking the lead on domestic policy and the President concentrating on foreign affairs and defense. The 2000 shortening of the presidential term to five years was intended in part to reduce that likelihood by aligning presidential and legislative cycles.
Parliament and What It Can Legislate
Parliament is bicameral. The National Assembly is the lower house, with 577 deputies elected directly in single-member constituencies through a two-round system. A first-round majority wins outright; otherwise candidates who received at least 12.5 percent of registered voters go to a second round decided by simple plurality. Direct election gives the Assembly the greater political weight, and it alone can bring down the government.
The Senate has 348 members representing France’s local and regional authorities.5European Parliament. The French Senate Senators are chosen through indirect election by a college of roughly 162,000 local officeholders, including municipal delegates, regional councilors, and Assembly members from the area.6French Senate. The Senatorial Elections The President cannot dissolve the Senate, which gives it a permanent, stabilizing role.4Conseil constitutionnel. Constitution of 4 October 1958
One distinctive feature is that Parliament’s legislative reach is capped. Article 34 lists the domains Parliament governs by law, including civil liberties, criminal law, taxation, and labor law.4Conseil constitutionnel. Constitution of 4 October 1958 Everything else falls to the executive under Article 37, which can act by decree. That split was a conscious break from the Fourth Republic, where Parliament could legislate on anything. It leaves the government with wide regulatory authority on administrative matters without needing a parliamentary vote.
Bills come either from the government (projet de loi) or from a member of Parliament (proposition de loi). They shuttle between the two chambers, which must agree on identical wording. If they cannot after two readings each, the government can convene a joint committee, and if that fails it can give the National Assembly the final word. Beyond ordinary lawmaking, Parliament authorizes declarations of war, approves military deployments lasting more than four months, and votes the national budget.
Article 49.3 and Article 16: The Sharpest Tools
No provision draws more argument than Article 49, paragraph 3. It lets the Prime Minister, after deliberation by the Council of Ministers, stake the government’s survival on a specific bill. Once invoked, the bill is treated as adopted unless the National Assembly passes a motion of no confidence within twenty-four hours.4Conseil constitutionnel. Constitution of 4 October 1958 The mechanism flips the arithmetic of passage: the opposition needs an absolute majority of all 577 deputies to block it. If the motion succeeds the government falls and the Prime Minister resigns. If it fails, the bill becomes law without a direct vote. Prime Minister Élisabeth Borne used 49.3 repeatedly in 2023 to push through pension reform over intense opposition.
The 2008 reform tightened the tool. The Prime Minister can now use 49.3 freely only for finance bills and social security financing bills. Beyond those, it is limited to one additional bill per parliamentary session.4Conseil constitutionnel. Constitution of 4 October 1958 Before 2008 there was no cap, and governments used it far more liberally.
Article 16 covers genuine national emergencies. When the institutions of the Republic, national independence, or territorial integrity face a serious and immediate threat and the normal functioning of government is disrupted, the President can take whatever measures the circumstances require. Before invoking those powers the President must formally consult the Prime Minister, the presidents of both chambers, and the Constitutional Council. Parliament sits automatically throughout, and the National Assembly cannot be dissolved while the powers are in force. After thirty days, the presidents of either chamber or a group of sixty deputies or senators can ask the Constitutional Council to review whether the crisis still justifies the measures; after sixty days the Council reviews automatically, a safeguard added in 2008 to prevent indefinite use.4Conseil constitutionnel. Constitution of 4 October 1958 Article 16 has been invoked once, by de Gaulle in 1961 during a military putsch in Algeria.
The Constitutional Council
The Constitutional Council (Conseil constitutionnel) is the guardian of the Constitution, reviewing whether legislation conforms to the constitutional block. It is not a court of general jurisdiction and does not hear ordinary cases.
It has nine appointed members serving single, non-renewable nine-year terms. The President of the Republic, the president of the National Assembly, and the president of the Senate each appoint three, with one-third of the Council renewed every three years.4Conseil constitutionnel. Constitution of 4 October 1958 Former presidents of the Republic are entitled to sit as members for life, though several have chosen not to.
Under Article 61, the Council reviews laws before they take effect. The President, the Prime Minister, or a group of sixty deputies or sixty senators can refer a bill after passage but before promulgation. If the Council finds the bill unconstitutional, it cannot be enacted. This ex ante review was the Council’s only function from 1958 until 2008.4Conseil constitutionnel. Constitution of 4 October 1958
The 2008 reform added a second, stronger mechanism: the Question Prioritaire de Constitutionnalité, or QPC. For the first time, a party to a court case can challenge an existing law on the ground that it violates constitutionally protected rights. If the Council finds the law unconstitutional, it is repealed, either immediately or on a later date the Council sets so Parliament can pass a replacement.7Service Public. What Is a Priority Constitutionality Issue (QPC) The QPC took effect on March 1, 2010, and has since generated hundreds of decisions.
How the Constitution Is Amended
Article 89 is the only lawful path for change. A proposal can come from the President, on the Prime Minister’s recommendation, or from a member of Parliament. Either way, both the National Assembly and the Senate must approve identical wording. Unlike ordinary legislation, the government cannot give the Assembly the final word over Senate objection: both chambers hold a real veto, which makes amendment substantially harder than passing a regular law.4Conseil constitutionnel. Constitution of 4 October 1958
Once the two chambers agree, the default final step is a national referendum. For government-initiated amendments, the President can instead convene both chambers together as the Congress at the Palace of Versailles, where the amendment must pass by a three-fifths supermajority of votes cast.8Legislationline. Constitution of the Republic of France Most amendments since 1958 have taken the Congress route rather than referendum.
Two limits sit outside the reach of any majority. The republican form of government cannot be the subject of any amendment, so no procedure exists for legally converting France into a monarchy or any other non-republican system.4Conseil constitutionnel. Constitution of 4 October 1958 And no amendment process can begin or continue while the integrity of French territory is under threat. Those two locks anchor the identity of the Constitution beyond the reach of ordinary politics.