In the UK:Maybe someone should have a word with the media and indeed our current Taoiseach about your theory.
“The Leader of His Majesty's Most Loyal Opposition, more commonly referred to as the Leader of the Opposition, is the person who leads the Official Opposition in the United Kingdom. The Leader of the Opposition is often viewed as an alternative or shadow prime minister, and is appointed to the Privy Council.”
Here:
The Leader of the Opposition (Irish: Ceannaire an Fhreasúra) in Ireland is a de facto term sometimes used to describe the politician who leads the largest party in the Parliamentary Opposition in the lower house of the Irish Parliament, Dáil Éireann. In the Dáil, the Leader of the Opposition sits on the right-hand side of the Ceann Comhairle and directly opposite the Taoiseach. The role is not an official one and is not recognised in the Irish constitution, nor in legislation.”
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