Below you will find a list of all constitutional amendments that have appeared on the ballot since 1892 in the State of Washington. Article V of the United States Constitution outlines basic procedures for constitutional amendment.Below is an overview of constitutional amendment processes in the 50 states. I discuss the various possible ways of amending state constitutions. A bill is subject to amendment as soon as the Senate begins to consider it. A simple majority vote is required during one legislative session for the Arizona State Legislature to place a constitutional amendment on the ballot. Since the Founding, Congress has used Article V's procedures to propose thirty-three constitutional amendments. Necessity of a governor's approval, in the context of the state of Washington's apparent ratification of the 16th amendment (income tax). Therefore, it is very difficult to amend the Constitution. Reprints two undated letters concerning the activities of the constitutional convention.