Roscommon (Dáil constituency)

Roscommon was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1923 to 1969 and from 1981 to 1992. The method of election was proportional representation by means of the single transferable vote (PR-STV).

History and boundaries
The constituency has had two separate periods of existence:
 * from the 1923 general election until its abolition at the 1969 general election, when it was amalgamated into the Roscommon–Leitrim constituency, which in turn existed until the 1981 general election. At different periods it returned 4, 3 or 4 TDs. It comprised the administrative county of Roscommon.
 * as a 3-seat constituency from the 1981 general election until its abolition at the 1992 general election to be replaced by the 4-seat constituency of Longford–Roscommon. It comprised the administrative county of Roscommon; and, in the administrative county of Galway, the district electoral divisions of: Ballinastack, Ballymoe, Ballynakill, Boyounagh, Creggs, Island, Kilcroan, Templetogher, Toberroe, in the former Rural District of Glennamaddy.

For the 2007 general election, the county was represented by the new Roscommon–South Leitrim constituency.

1964 by-election
Following the death of Fine Gael TD James Burke, a by-election was held on 8 July 1964. The seat was won by the Fine Gael candidate Joan Burke, widow of the deceased TD.

1932 general election
Details of the fifth count are not available. Gallagher notes it is unclear as to why the returning officer proceeded with the elimination of O'Dowd on the final count.

1925 by-election
Following the resignation of Cumann na nGaedheal TD Henry Finlay, a by-election was held on 11 March 1925. The seat was won by the Cumann na nGaedheal candidate Martin Conlon.