The Constitution of Ireland vests executive authority in a government which is headed by the , the head of government. The government is composed of ministers, all of whom must be members of the , which consists of and . The Taoiseach must be nominated by the Dáil, the house of representatives. Following the nomination of the , the President of Ireland appoints the to their role. The President also appoints members of the government, including the , the deputy head of government, on the nomination of the and their approval by the . The government is dependent upon the Oireachtas to pass primary legislation and as such, the government needs to command a majority in the in order to ensure support and confidence for budgets and government bills to pass. The Government is also known as the cabinet.