Assembly Constitutional Amendment 58. Amends section 8 of Article XI of Constitution. Declares that at election for adoption of charter by cities, or cities and counties, electors shall first vote on question, Shall I a board of freeholders be elected to frame a proposed\u27 new charter? and secondly for freeholders, provided that the fifteen candidates for freeholder receiving highest number of vot8S shall be elected only if first question receives majority vote of electors voting thereon. Authorizes legislative body of city, or city and county, to frame a charter for submission to electors