Dún Laoghaire (Dáil constituency)

Dún Laoghaire is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects 4 deputies (Teachtaí Dála, commonly known as TDs) on the system of proportional representation by means of the single transferable vote (PR-STV).

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 County Dublin 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. At the 2016 general election the constituency was redrawn to include the electoral divisions of Cabinteely-Loughlinstown, Foxrock-Carrickmines, Foxrock-Torquay and Stillorgan-Leopardstown from the now-dissolved Dublin South constituency.

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 next general election, the Electoral (Amendment) Act 2023 defines the constituency as:

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.