A Dáil by-election was held in the constituency of Dublin South-Central in Ireland on Wednesday, 27 October 1999, to fill a vacancy in the 28th Dáil. It followed the death of Labour Teachta Dála (TD) Pat Upton on 22 February 1999.
The writ of election to fill the vacancy was agreed by the Dáil on 5 October 1999.
The by-election was won by the Labour candidate Mary Upton, sister of the deceased TD, Pat Upton.
The turnout at 28.0% was the lowest in by-election history at that time.
The other candidates were Dublin City Councillor Michael Mulcahy for Fianna Fáil, Dublin City Councillor Catherine Byrne for Fine Gael, Aengus Ó Snodaigh for Sinn Féin, John Goodwillie for the Green Party, Shay Kelly for the Workers' Party, Manus MacMeanmain for Christian Solidarity, Eammon Murphy as an independent and John Burns for Natural Law.
Mulcahy, Byrne and Ó Snodaigh would all go on to represent the constituency as TDs in the future.
Result
References