The 20th Dáil was elected at the 1973 general election on 28 February 1973 and met on 14 March 1973. The members of Dáil Éireann, the house of representatives of the Oireachtas (legislature) of Ireland, are known as TDs. On 25 May 1977, President Patrick Hillery dissolved the Dáil on the request of Taoiseach Liam Cosgrave. The 20th Dáil lasted 1,534 days.
|Legislative body||Dáil Éireann|
|Meeting place||Leinster House|
|Term||14 March 1973 – 25 May 1977|
|Election||1973 general election|
|Government||14th Government of Ireland|
|Ceann Comhairle||Seán Treacy|
|Chief Whip||John Kelly|
|Leader of the Opposition||Jack Lynch|
Composition of the 20th DáilEdit
|Party||Feb. 1973||May 1977|
|Independent Fianna Fáil||1||2|
This is a graphical comparison of party strengths in the 20th Dáil from March 1973. This was not the official seating plan.
TDs by constituencyEdit
|14 March 1973||Tipperary South||Ceann Comhairle||Labour||Seán Treacy takes office as Ceann Comhairle|
|30 May 1973||Monaghan||Fianna Fáil||Erskine H. Childers elected as president of Ireland|
|27 November 1973||Monaghan||Fine Gael||Brendan Toal wins seat vacated by Childers|
|13 July 1974||Cork North-East||Fianna Fáil||Death of Liam Ahern|
|13 November 1974||Cork North-East||Fianna Fáil||Seán Brosnan holds seat vacated by the death of Ahern|
|24 December 1974||Galway North-East||Fianna Fáil||Death of Michael F. Kitt|
|5 January 1975||Galway West||Fianna Fáil||Death of Johnny Geoghegan|
|4 March 1975||Galway North-East||Fianna Fáil||Michael P. Kitt holds seat vacated by the death of his father Michael F. Kitt|
|4 March 1975||Galway West||Fianna Fáil||Máire Geoghegan-Quinn holds seat vacated by the death of her father Johnny Geoghegan|
|25 September 1975||Mayo West||Fine Gael||Death of Henry Kenny|
|12 November 1975||Mayo West||Fine Gael||Enda Kenny holds seat vacated by the death of his father Henry Kenny|
|29 February 1976||Donegal North-East||Fianna Fáil||Death of Liam Cunningham|
|13 April 1976||Dublin South-West||Fianna Fáil||Death of Noel Lemass|
|10 June 1976||Donegal North-East||Independent Fianna Fáil||Paddy Keaveney gains seat vacated by the death of Cunningham|
|10 June 1976||Dublin South-West||Labour||Brendan Halligan gains seat vacated by the death of Lemass|
|25 January 1977||Dublin County South||Fine Gael||Resignation of Richard Burke on nomination as EC Commissioner|
|19 May 1977||Dublin South-West||Fine Gael||Resignation of Declan Costello on nomination as High Court judge|
- "Election of Ceann Comhairle – Dáil Éireann (20th Dáil) – Vol. 265 No. 1". Houses of the Oireachtas. 14 March 1973. Archived from the original on 8 July 2022. Retrieved 27 August 2022.
- "TDs & Senators (20th Dáil)". Houses of the Oireachtas. Archived from the original on 5 May 2018. Retrieved 21 June 2022.
- "Resignation of Member – Dáil Debates (20th Dáil)". Houses of the Oireachtas. 25 January 1977. Archived from the original on 4 November 2019. Retrieved 19 September 2019.
- "Resignation of Member – Dáil Debates (20th Dáil)". Houses of the Oireachtas. 19 May 1977. Archived from the original on 21 October 2019. Retrieved 19 September 2019.