2026 Galway West by-election

A by-election is due to be held in the Dáil constituency of Galway West in Ireland in 2026, to fill the vacancy left by the election of Catherine Connolly as president of Ireland. Under Article 12.6.2° of the Constitution of Ireland, a member of either House of the Oireachtas who is elected as president is deemed to have vacated that seat. Connolly was declared elected as president on 25 October 2025. According to the Electoral (Amendment) Act 2011, the writ for the by-election must be issued within six months of the vacancy. In February 2026, Taoiseach Micheál Martin said the by-election would be held in May, together with the 2026 Dublin Central by-election.