The Ohio Constitution is the basic governing document of the State of Ohio, which in 1803 became the 17th state to join the United States of America. Ohio has had three constitutions since statehood was granted.
Ohio was created from the easternmost portion of the Northwest Territory. In 1787, the Congress of the Confederation of the United States passed the Northwest Ordinance, establishing a territorial government and providing that "[t]here shall be formed in the said territory, not less than three nor more than five states." The Ordinance prohibited slavery and provided for freedom of worship, the right of habeas corpus and trial by jury, and the right to make bail except for capital offenses. Ohio courts have noted that the Northwest Ordinance "was ever considered as the fundamental law of the territory." Ludlow's Heirs v. Johnston (1828), 3 Ohio 553, 555; State v. Bob Manashian Painting (2002), 121 Ohio Misc.2d 99, 103.
The Ohio territory's population grew steadily in the 1790s and early 19th century. Congress passed an enabling bill to establish a new state, which President Thomas Jefferson signed into law on April 30, 1802. A state constitutional convention was held in November 1802 in Chillicothe, Ohio, and it adopted what became known as the 1802 Constitution. See Ohio Constitutional Convention (1802). Largely due to the perception that territorial governor Arthur St. Clair had ruled heavy-handedly, the constitution provided for a "weak" governor and judiciary, and vested virtually all power in a bicameral legislature, known as the General Assembly. Congress simply recognized the existence of the "state of Ohio" rather than passing a separate resolution declaring Ohio a state as it had done and would do with other new states. On February 19, 1803, President Jefferson signed the bill into law. It provided that Ohio "had become one of the United States of America," and that Federal law "shall have the same force and effect within the said State of Ohio, as elsewhere within the United States."