Prior to the Act, the basic document setting out the governance of New Zealand since the signing of the Treaty of Waitangi was the Charter of 1840, which specified:
The Governor was to summon an Executive Council to advise and assist him. This Council comprised the Colonial Secretary, the Attorney-General, and the Treasurer.
A Legislative Council of seven people – the Governor, the members of the Executive Council, and three nominated Justices of the Peace – was to make laws and ordinances "for the peace, order, and good government" of the colony.
The Executive and Legislative Councils met infrequently during the governorships of William Hobson and his successors, Willoughby Shortland, Robert FitzRoy and Sir George Grey. Throughout the Crown colony period each governor held, in the name of the Crown, complete control over the executive and legislative functions of government.
Settler demands for representative government
There was a growing agitation from the settlers for representative government. This was particularly the case in Wellington which, as a New Zealand Company settlement, briefly had its own independent governing council, until Governor Hobson sent his Colonial Secretary, Willoughby Shortland, and some soldiers to Port Nicholson to end any challenge to British sovereignty. The people of Auckland, then the capital, were less interested. Eventually, pressure led to the enactment in 1846 in London of an intricate constitution.
Effect
The Act provided for a three-tiered system of representative government:
Two provinces were to be established with assemblies that would include a Governor, a nominated Legislative Council, and a House of Representatives elected by the mayor and councillors of the municipalities in the province;
A General Assembly for the whole colony consisting of a Governor-in-Chief, a nominated Legislative Council, and a House of Representatives appointed by the houses of the provinces from their own members.
argued that the Constitution Act would place the Māori majority under the political control of the settlers, and so undermine his efforts to protect Māori interests. In a dispatch to Earl Grey, Governor Grey stated that in implementing the Act, Her Majesty would not be giving the self-government that was intended, instead:
"...she will give to a small fraction of her subjects of one race the power of governing the large majority of her subjects of a different race... there is no reason to think that they would be satisfied with, and submit to, the rule of a minority"
In 1848 the British Parliament passed the Government of New Zealand Act 1848 under which parts of the 1846 Act dealing with establishment of provincial assemblies and the General Assembly were not to come into force for another five years. The Charter provisions relating to the Legislative Council for the whole colony continued and the Governor was authorised to establish Legislative Councils in each of the provinces. However, settler pressure for representative institutions and criticism of Grey intensified, and for the next four years the Governor pursued a course that gave little satisfaction to the settlers. Early in 1848 he had appointed Major-General Pitt as Lieutenant-Governor of New Ulster, and Edward John Eyre as Lieutenant-Governor of New Munster. Each had associated with him an Executive Council. Later in the same year Grey, through an Ordinance of the General Legislative Council, established nominated Legislative Councils in each province. The Provincial Council of New Ulster was never summoned. In 1851, under the authority of the 1846 Act, Grey made the town of Auckland a municipality, but this step did not relieve the pressure for a Legislative Council which would be representative of the whole province. The Provincial Council of New Munster had only one legislative session – in 1849 – before it succumbed to the virulent attacks of the Wellington settlers. Grey, sensible to the pressures, inspired an ordinance of the General Legislative Council under which new Legislative Councils would be established in each province with two-thirds of their members elected on a generous franchise. Grey, however, proceeded to implement the ordinance with such deliberation that neither Council met before advice was received that the Parliament at Westminster had passed the New Zealand Constitution Act 1852.