A Dáil by-election was held in the constituency of Galway West in Ireland on Thursday, 30 May 1940, to fill a vacancy in the 10th Dáil. It followed the death of Fianna Fáil TD Seán Tubridy on 15 July 1939.
In 1940, Galway West was a three seat constituency comprising Galway City and the western parts of County Galway. The writ of election to fill the vacancy was agreed by the Dáil on 9 May 1940.
The by-election was won by the Fianna Fáil candidate John J. Keane.
Keane lost his seat at the 1943 general election, and was never subsequently re-elected to the Dáil. The runner-up Michael Donnellan of Clann na Talmhan was elected for Galway East at the 1943 general election.
Result
References