Taoiseach

The Taoiseach (IPA:  — plural: Taoisigh ( or ), also referred to as An Taoiseach , is the head of government or prime minister of the Republic of Ireland .The Taoiseach is appointed by the President upon the nomination of Dáil Éireann (the lower house of Oireachtas), and must, while he or she remains in office, retain the support of a majority in the Dáil. The current Taoiseach is Bertie Ahern, TD, leader of the Fianna Fáil party.
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