Polish-Lithuanian Commonwealth Adopts May 3 Constitution

Context

For over a century the Commonwealth had operated under the nobles’ democracy known as Golden Liberty, a system of parliamentary checks that granted the szlachta extensive privileges while leaving the central government weak. The liberum veto, introduced in 1652, allowed any single deputy to nullify an entire Sejm session, enabling foreign powers and magnates to paralyze legislation. Repeated failures to enact reforms left the state vulnerable; the First Partition of 1772 stripped away significant territory and exposed the Commonwealth’s inability to defend itself.

What Happened

Reform efforts gained momentum with the election of Stanisław August Poniatowski in 1764 and the convening of the Four-Year Sejm in 1788. A group of progressive nobles and the king, advised by figures such as Hugo Kołłątaj and Ignacy Potocki, drafted a new governmental framework during confidential sessions. On May 3, 1791, the Sejm, meeting in Warsaw, was presented with the finished Government Act; after brief debate it was adopted by acclamation and immediately sworn to in St. John’s Cathedral.

Aftermath

The constitution’s opponents, backed by Catherine the Great of Russia, formed the Targowica Confederation and invited Russian intervention. The ensuing Polish–Russian War of 1792 ended in defeat for the reformers; the king reluctantly joined the confederates. In 1793 the Grodno Sejm, convened under Russian pressure, declared the constitution null and void, paving the way for the Second Partition.

Legacy

Though short-lived, the 1791 Constitution became a enduring symbol of Polish and Lithuanian aspirations for sovereignty and enlightened governance. Its memory sustained national identity through the partitions and the nineteenth-century uprisings, and it was restored as an official holiday in independent Poland in 1919. Historians view it as a pioneering attempt to blend constitutional monarchy with Enlightenment principles on a large scale.