Prior to the 1885 United Kingdom general election the area was part of the Fermanagh constituency.
In 1918 Sinn Féin had a limited electoral pact with the Nationalists to avoid seriously splitting the vote in seats Unionists might win.
In this constituency Sinn Féin benefited from the pact, as nationalists were advised to vote for John O'Mahoney (otherwise known as Seán O'Mahony) rather than their own candidate (the incumbent MP).
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.
This area, in republican theory, was incorporated in an eight-member Dáil constituency of Fermanagh and Tyrone.