Missouri Constitution Article III Sec. 26 – Legislative journals — demand for yeas and nays — manner and record of vote
Each house shall publish a journal of its proceedings. The yeas and nays on any question shall be taken and entered on the journal on the motion of any five members. Whenever the yeas and nays are demanded, or required by this constitution, the whole list of members shall be called and the names of the members voting yea and nay and the absentees shall be entered in the journal.
