Numerous elections were overturned on petition by the losing candidate; after the 1868 election was overturned, a Royal Commission examined the matter and reported that "at the last three elections of members to serve in Parliament for the Borough of Sligo, corrupt practices have extensively prevailed." Parliament therefore passed the Sligo and Cashel Disenfranchisement Act 1870 (33 & 34 Vict. c.38) which came into force on 1 August 1870. The act disfranchised Sligo Borough as well as Cashel, another Irish borough. The area of Sligo borough became part of the Sligo County constituency. In 1881 the county's MP, Thomas Sexton, introduced a private member's bill to re-enfranchise the borough, which was defeated on second reading.
Last MP for the constituency. Election declared void on petition.
1870, August 1
1 Walker (like F. W. S. Craig in his compilations of election results for Great Britain) classifies Whig, Radical and similar candidates as Liberals from 1832. The name Liberal was gradually adopted as a description for the Whigs and politicians allied with them, before the formal creation of the Liberal Party shortly after the 1859 general election.
The Parliaments of England by Henry Stooks Smith (1st edition published in three volumes 1844-50), 2nd edition edited (in one volume) by F.W.S. Craig (Political Reference Publications 1973)
Parliamentary Election Results in Ireland, 1801-1922, edited by B.M. Walker (Royal Irish Academy 1978)
British Electoral Facts 1832-1987, compiled and edited by F.W.S. Craig (Parliamentary Research Services, 5th edition, 1989)
Commissioners for the purpose of making inquiry into the existence of corrupt practices at the last election for Sligo (1870). Report. Command papers. C.48. Dublin: Alex Thom. Retrieved 23 December 2016.
Select Committee on the Sligo borough election petition (6 June 1853). Report. Sessional papers. HC 572, 1852-1853 18 595. Retrieved 23 December 2016.;
Select Committee on the Sligo borough election petition (10 June 1853). Minutes of evidence, proceedings and index. Sessional papers. HC 600, 1852-1853 18 605, 713. Retrieved 23 December 2016.
Select Committee on Appointment of H. Stonor as Judge in Colony of Victoria, after being reported Guilty of Bribery at Election for Borough of Sligo (1 June 1854). Report, minutes of evidence and appendices. Sessional papers. HC 278, 1854 8 681. Retrieved 23 December 2016.
Select Committee on Sligo Borough Election Petition (23 July 1857). Report and proceedings. Sessional papers. HC 227, 1857 8 585. Retrieved 23 December 2016.;
Select Committee on Sligo Borough Election Petition (3 August 1857). Minutes of evidence and proceedings. Sessional papers. HC 206, 1857 8 609. Retrieved 23 December 2016.