Missouri Constitution

The Missouri Constitution is the state constitution of the U.S. State of Missouri. It is the supreme law formulating the law and government of Missouri, subject only to the federal Constitution, and the people. The fourth and current Missouri Constitution was adopted in 1945. It provides for three branches of government: legislative (the Missouri General Assembly), executive (the Governor of Missouri), and judicial (the Supreme Court of Missouri). It also sets up local governments in the form of counties and cities.

The first constitution was written in 1820 in only 38 days. The Missouri Constitutional Convention (1861-63) was elected to decide on secession, and made no changes to the constitution.

In 1865, after the American Civil War, and again in 1875, after reconstruction, new constitutional conventions composed Missouri's second and third constitutions. In the early 1900s, the Constitution of 1875 was amended to allow constitutional amendment by the initiative process.

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