Hayes is first elected to Dáil Éireann as a Sinn Féin TD for the National University of Ireland constituency at the 1921 general election. At the 1922 general election he is elected as a Pro-Treaty Sinn Féin TD. He serves as Minister for Education from January to September 1922, as part of the Dail Aireacht ministry as opposed to the Provisional Government. He has special responsibility for secondary education. He is also acting Minister for Foreign Affairs from August to September 1922. He supports the Anglo-Irish Treaty during the crucial debates in 1922. That same year he is elected Ceann Comhairle of the first Dáil of the Irish Free State. He holds that post for ten years until 1932.
Hayes loses his Dáil seat at the 1933 general election, but is elected to Seanad Éireann in 1938 for Fine Gael. He remains a Senator until 1965, acting as leader of government and opposition there.
Hayes becomes Professor of Irish at University College Dublin in 1951.
Michael Hayes dies at the age of 86 on July 11, 1976 in Dublin.
During McGilligan’s period in opposition from 1932 to 1948 he builds up a law practice and becomes professor of constitutional and international law at University College, Dublin. When the National University of Ireland representation is transferred to Seanad Éireann in 1937, he is elected as TD for the Dublin North-West constituency.
In 1948 McGilligan is appointed Minister for Finance in the first Inter-Party Government. As Minister he undertakes some major reforms. He instigates a new approach where Government invests radically in capital projects. Colleagues however complain of his frequent absence from the Cabinet table and the difficulty of contacting him at the Department of Finance. Between 1954 and 1957 he serves as Attorney General. He retires from Dáil Éireann at the 1965 general election, having served for over 40 years.
Patrick McGilligan dies in Dublin on November 15, 1979. Despite his well-known fondness for predicting that he would die young, he reaches the age of ninety. A later Attorney General, John M. Kelly, in the preface to his definitive text, The Irish Constitution (1980), notes the remarkable number of senior judges who are former students of McGilligan and suggests that, given his own firm belief in the value of judicial review, he deserves much of the credit for the remarkable development of Irish law in this field since the early 1960s.
The First Dáil is convened from 1919–1921. It is the first meeting of the unicameral parliament of the revolutionary Irish Republic. In 1919 candidates who have been elected in the Westminster elections of 1918 refuse to recognise the Parliament of the United Kingdom and instead establish an independent legislature in Dublin called “Dáil Éireann.” The establishment of the First Dáil occurs on the same day as the outbreak of the Irish War of Independence.
Being the first and highly symbolic meeting, the proceedings of the Dáil are conducted for the only time entirely in the Irish language, except for previously drafted declarations that are repeated in other languages as well. The Dáil elects Cathal Brugha as its Ceann Comhairle (chairman). A number of short documents were then adopted. These are the:
The Declaration of Independence asserts that the Dáil is the parliament of a sovereign state called the “Irish Republic,” and so the Dáil establishes a cabinet called the Ministry or “Aireacht,” and an elected prime minister known both as the “Príomh Aire” and the “President of Dáil Éireann.” The first, temporary president is Cathal Brugha. He is succeeded in April by Éamon de Valera.
The membership of the Dáil was drawn from the Irish MPs elected to sit at the Westminster parliament, 105 in total, of which 27 are listed as being present for the first meeting. Of the remainder 34 are described as being “imprisoned by the foreigners” and three as being “deported by the foreigners.” Five Sinn Féin members are described as being “as láthair” (absent). The remaining 32 members who are invited but not present are six members of the Irish Parliamentary Party and 26 unionists, mainly from the northern six counties that would later form Northern Ireland. These include all MPs elected to sit for Belfast, Counties Down, Antrim, Armagh, and Londonderry, two out of three MPs for County Tyrone and one out of two MPs for County Fermanagh. For the portion of the country that would later become the Irish Free State, MPs do not sit for Waterford city or the Dublin University constituency, although members do attend for the National University of Ireland constituency.