The proposed constitutional amendment would allow a local charter commission 18 months after its election to prepare a charter or charter revision for submission to the voters of a city or town. Presently, the constitution provides that the charter or charter revision be prepared within 10 months of the election of the charter commission.
Source for Popular Vote data: Department of the State Secretary, comp., "Questions," Massachusetts Election Statistics - 1978 (Boston: The Division, 1978)