The Constitution of Mississippi is the primary organizing law for the U.S. state of Mississippi delineating the duties, powers, structures, and functions of the state government. Mississippi's original constitution was adopted at a constitutional convention held at Washington, Mississippi in advance of the western portion of the territory's admission to the Union in 1817. The current state constitution was adopted in 1890 following the reconstruction period. It has been amended and updated 100 times in since its adoption in 1890, with some sections being changed or repealed altogether. The most recent modification to the constitution occurred in November 2020, when Section 140 was amended, and Sections 141-143 were repealed.