The Oldest Living Constitution You’ve Never Heard Of
The Shadow of the Giant
Ask most people which constitution has lasted the longest, and they’ll say the U.S. Constitution. The document, written in 1787 and in effect from 1789, is studied in law schools on every continent. But it isn’t the oldest functioning codified constitution in the world. That title belongs to a state-level document from 1779, drafted largely in a house in Braintree, Massachusetts, by a man who called himself “obnoxious, suspected, and unpopular.”
The Massachusetts Constitution was ratified on June 15, 1780, and took effect on October 25, 1780. It has been in continuous operation for 246 years, seven years before the more famous federal document it helped inspire.
The Lifespan of Law
Research by legal scholars, including Tom Ginsburg, puts the average lifespan of a national codified constitution at around 17 years. Thomas Jefferson thought that sounded about right: he wrote to James Madison that constitutions naturally expire after 19 years, since “the earth belongs always to the living generation.” Roughly half of all constitutions are replaced before they turn 18.
The Massachusetts Constitution has outlived Jefferson’s suggested natural lifespan more than twelve times over. It has been amended 121 times as of 2022, but never scrapped and replaced. The underlying document is still the document.
The “Codified” Catch
A fair question: what about San Marino, whose constitutional statutes date to October 8, 1600? Or the UK, whose framework traces back through the Bill of Rights of 1689 and Magna Carta of 1215?
The answer turns on a real distinction. A codified constitution is a single, unified document laying out in one place how government is structured and what rights citizens hold. San Marino’s constitutional framework spans six separate books of law; the UK has no single defining document at all. The Massachusetts Constitution is one document, that’s precisely what makes its age so unusual.
A Blueprint for Balance
The document’s longevity isn’t luck. Massachusetts had already tried and failed once: in 1778, the state legislature drafted a constitution, put it to voters, and got it rejected. The legislature had written rules that kept itself conveniently powerful. Voters noticed.
When Adams returned from France in August 1779, his town selected him as a delegate to a new constitutional convention within a week. He insisted the new constitution be written not by the existing legislature but by a convention of 312 elected delegates called for that purpose alone. The principle is straightforward: the body that benefits from the rules should not write them. Massachusetts was the first government in history to use this model, and the Philadelphia convention of 1787 borrowed it directly.
Designing for Flaws
Adams’ deeper insight was philosophical. He didn’t design a system for rational, fair-minded public servants, he designed one for actual human beings. The Massachusetts Constitution is built on the premise that people in power will, given the opportunity, abuse it. The answer wasn’t to find better people; it was to build in checks that made any single person or branch incapable of acting alone. The document separates executive, legislative, and judicial authority across a Preamble, a Declaration of Rights, and a Frame of Government, structured in a way no constitution had attempted before. Two and a half centuries of amendments, rather than replacements, suggest Adams calibrated the balance well.
The Abrasive Genius
Adams was not an easy person. His self-description as “obnoxious, suspected, and unpopular” was not false modesty. While Benjamin Franklin charmed French society and was appointed sole U.S. Minister Plenipotentiary to France, Adams was sidelined. By the time the Philadelphia Convention met in 1787, Adams wasn’t even present, he was serving as American ambassador to England. His influence on that document arrived through the one he had already written.
The Massachusetts Constitution passed through a subcommittee of three (Adams, Samuel Adams, and James Bowdoin), which delegated the actual drafting to John Adams alone. He wrote it between September 13 and mid-October 1779, working largely in Braintree, calling himself a “sub-sub committee of one.” The delegates made modifications through the convention process, but the architecture was his, and that architecture has now outlasted every other written constitution on earth.