Jenny Shipley of the Council of Women World Leaders, an international network of current and former women presidents and prime ministers. Shipley led the National Party into the 1999 election, hoping to become the first woman to be elected prime minister in her own right. However, she was defeated by the Labour Party, also led by a woman, Helen Clark. This election was a significant moment in history for New Zealand as it was the first (and to date, only) New Zealand election in which the leaders of both major parties were women. Shipley served as the Leader of the Opposition until
Prime Minister of Denmark "Council President" (). Carl Christian Hall became the first Prime Minister/Council President to lead a political party (the National Liberal Party). The modern Prime Minister's Office was founded on 1 January 1914, when the Council Presidium was established as a department under the Prime Minister, when it had previously existed as an informal council gathered by the Prime Minister. The title of the Prime Minister changed again in 1918 under the Premiership of Carl Theodor Zahle, becoming titled the "Minister of State" (in-line with its Scandinavian neighbours, Norway and Sweden), which it remains to this day. By the mid-nineteenth century