North Londonderry was a county constituency, officially titled the North Derry division of County Londonderry. It extent was unchanged throughout its existence, comprising the northern part of County Londonderry, defined as follows:
The constituency was a predominantly unionist area. Sinn Féin was easily beaten in 1918 and 1919.
The First Dáil[]
Sinn Féin contested the general election of 1918 on the platform that instead of taking up any seats they won in the United Kingdom Parliament, they would establish a revolutionary assembly in Dublin. In republican theory every MP elected in Ireland was a potential Deputy to this assembly. In practice only the Sinn Féin members accepted the offer.
The revolutionary First Dáil assembled on 21 January 1919 and last met on 10 May 1921. The First Dáil, according to a resolution passed on 10 May 1921, was formally dissolved on the assembling of the Second Dáil. This took place on 16 August 1921.
In 1921 Sinn Féin decided to use the UK authorised elections for the Northern Ireland House of Commons and the House of Commons of Southern Ireland as a poll for the Irish Republic's Second Dáil. This area, in republican theory, was incorporated in a five-member Dáil constituency of Londonderry.
^ abcdefghijkWalker, B.M., ed. (1978). Parliamentary Election Results in Ireland, 1801-1922. Dublin: Royal Irish Academy. ISBN0901714127.
Parliamentary Election Results in Ireland, 1801–1922, edited by B.M. Walker (Royal Irish Academy 1978)
Who's Who of British Members of Parliament: Volume II 1886–1918, edited by M. Stenton and S. Lees (The Harvester Press 1978)
Who's Who of British Members of Parliament: Volume III 1919–1945, edited by M. Stenton and S. Lees (The Harvester Press 1979)
Redistribution of Seats Act, Seventh Schedule, Part III - Ireland, in The Public General Acts of the United Kingdom of Great Britain and Ireland passed in the forty-eighth and forty-ninth years of Her Majesty Queen Victoria