[1] The constituency returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system.
The seat had become vacant following the resignation of the incumbent Irish Parliamentary Party MP, Bernard Collery who had been elected for the Irish National Federation (Anti-Parnellite).
[2] Collery vacated his Parliamentary seat by being appointed Steward of the Chiltern Hundreds on 27 January 1900.
The Executive of the United Irish League met on Wednesday 14 February to select a candidate and unanimously selected John O'Dowd.
This article about a by-election to the Parliament of the United Kingdom in Ireland is a stub.