Cavan (Dáil constituency)

Cavan was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1921 to 1977. The method of election was proportional representation by means of the single transferable vote (PR-STV).

History
From 1921 to 1923, Cavan elected 3 deputies (Teachtaí Dála, commonly known as TDs). This was increased to 4 with effect from the 1923 general election, and reduced to 3 with effect from the 1961 general election to 1977.

At the 1977 general election, the Cavan constituency was combined with Monaghan to form the new 5 seat Cavan–Monaghan constituency.

Boundaries
Throughout its existence, the constituency consisted of the entire administrative county of Cavan.

1925 by-election
Following the resignation of Cumann na nGaedheal TD Seán Milroy, a by-election was held on 11 March 1925. The seat was won by the Cumann na nGaedheal candidate John Joe O'Reilly.

1921 general election

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