Elections in Southern Rhodesia were used from 1899 to 1923 to elect part of the Legislative Council and from 1924 to elect the whole of the Legislative Assembly which governed the colony. Since the granting of self-government in 1923, Southern Rhodesia used the Westminster parliamentary system as its basis of government. The Political party (or alliance) that had most of the seats in the Legislative Assembly became the government. The person in charge of this bloc (the head of government) was the Premier, later renamed Prime Minister, who then chose his cabinet from his elected colleagues. Legislative Council Prior to the grant of responsible government, Southern Rhodesia was governed by a Legislative Council from 1899 which consisted of some nominated and some elected members. The nominated members were appointed by the British South Africa Company, and consisted of the executive which ruled the colony; the number of elected members increased throughout the period as the number of white people in the colony increased. Legislative Assembly Following the grant of responsible government in 1924, Southern Rhodesia's Parliament was unicameral, consisting of the Legislative Assembly on its own. Once Acts were passed by the Legislative Assembly, they were passed to the Governor to give assent on behalf of the British monarch. The Assembly had 30 seats until the 1961 constitution, when it was increased to 65 (50 constituencies and 15 districts). It was presided over by a Speaker; Southern Rhodesia differed from UK practice in that the Speaker was an ex officio member of the Legislative Assembly. Electoral qualifications 1899–1923 The colony of Southern Rhodesia took its base law from that of Cape Colony, suitably modified to retain European settler control. The base requirement was that an elector be a British subject, male, aged 21 or over, and able to write their own name and address and sign their name on the registration form. There were then three requirements which qualified voters. a) Owner of a registered mining claim in Southern Rhodesia. b) Occupier of immovable property valued at £75. c) Receiving in Southern Rhodesia wages or salary of £50 per annum. Under b) and c), voters must also have had six months residency in Southern Rhodesia. In 1912, the literacy requirements were raised to require voters to write at dictation 50 words in the English language, if required by the registering officer. The means qualification under b) was raised to £150