Tex. Local Government Code § 8.022: PETITION TO CHANGE.

The residents of a municipality may initiate an attempt to make the change under this subchapter by filing with the mayor of the municipality a written petition signed by at least 10 percent of the qualified voters of the municipality. The petition must request the mayor to order an election to determine whether the municipality will change to a Type C general-law municipality.

Acts 1987, 70th Leg., ch. 149, Sec. 1, eff. Sept. 1, 1987.