Dublin North-West (Dáil constituency)
Dublin North-West is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects 3 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 first constituency with this name created by the Government of Ireland Act 1920 and first used at the 1921 general election, combining the old Westminster constituencies of Dublin Clontarf, Dublin St James's and Dublin St Michan's. It was abolished for the 1923 general  election. A second constituency with this name was created by the Electoral (Revision of Constituencies) Act 1935, dividing the old Dublin North constituency was divided into Dublin North-West and Dublin North-East, and first used at the 1937 general election. The constituency was briefly abolished in 1977, under the Electoral (Amendment) Act 1974, with most of the constituency going to the new constituency of Dublin Finglas with a smaller but significant portion going to a new Dublin Cabra constituency. A third constituency with this name was created by the Electoral (Amendment) Act 1980 and first used at the 1981  general election. It is located in the north-western area of Dublin city. The constituency is overwhelmingly urban; it encompasses Ballymun, Finglas and parts of Glasnevin (Ballygall) in the local government area of Dublin City Council, together with the Santry area of Fingal County Council and the area of Whitehall to the west of Swords Road. The Electoral (Amendment) (Dáil Constituencies) Act 2017 defines the constituency as: Election results. 1952 by-election. Following the death of Independent TD A. P. Byrne, a by-election was held on 12 November 1952. The seat was won by Independent candidate Thomas Byrne, brother  of the deceased TD. The surplus votes of the elected candidate were distributed after being declared elected because there was a possibility another candidate could have reached the threshold of a third of a quota which would have meant their election deposit was returned to them. 1945 by-election. Following the resignation of Fianna Fáil TD Seán T. O'Kelly on his election as President of Ireland, a by-election was held on 4 December 1945. The seat was won by Vivion de Valera, son of the Taoiseach Éamon de Valera.