An amendment may be proposed by a two-thirds vote of both Houses of Congress, or, if two-thirds of the States request one, by a convention called for that purpose. The amendment must then be ratified by three-fourths of the State legislatures, or three-fourths of conventions called in each State for ratification.
The Texas Constitution provides that the legislature, by a two-thirds vote of all members of each house, may propose amendments revising the constitution and that proposed amendments must then be submitted for approval to the qualified voters of the state.