Dún Laoghaire is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects four deputies (Teachtaí Dála, commonly known as TDs) on the system of proportional representation by means of the single transferable vote (PR-STV). It is in the eastern part of the county of Dún Laoghaire–Rathdown.

History and boundaries

The constituency was created in 1977, succeeding the earlier Dún Laoghaire and Rathdown constituency which had been created in 1948. The constituency is in the eastern coastal area of Dún Laoghaire–Rathdown county (part of Dublin County Council till 1994), including the town of Dún Laoghaire and the villages of Ballybrack, Blackrock, Booterstown, Cabinteely (east of the N11 road), Dalkey, Deansgrange, Glasthule, Killiney, Loughlinstown, Monkstown, Sallynoggin, Shankill, and Stillorgan. The Constituency Review Report 2023 of the Electoral Commission recommended that at the next general election, Dún Laoghaire be altered with the transfer of territory to Dublin Rathdown. For the 2024 general election, the Electoral (Amendment) Act 2023 defines the constituency as:

TDs

Elections

2024 general election

2020 general election

2016 general election

Seán Barrett was Ceann Comhairle at the dissolution of the 31st Dáil and therefore deemed to be returned automatically. The constituency was treated as a three-seater for the purposes of calculating the quota.

2011 general election

2007 general election

2002 general election

1997 general election

1992 general election

1989 general election

1987 general election

November 1982 general election

February 1982 general election

1981 general election

1977 general election