The chancellor of Austria is the head of government of Austria, appointed by the president and viewed as the country's de facto chief executive. The chancellor chairs and leads the Cabinet, which also includes the vice-chancellor and the ministers. Following World War I, the office was established by the Provisional National Assembly on 30 October 1918 and named state chancellor of the Republic of German-Austria, and its first holder, Karl Renner, was appointed by the State Council. Since the institution of the republic, the People's Party and the Social Democratic Party have largely dominated Austrian politics; the People's Party (and its predecessor, the Christian Social Party) have led nineteen cabinets and served as a junior partner in eight, while the Social Democratic Party (formerly the Social Democratic Workers' Party) has led eleven and served as a junior partner in five. Bruno Kreisky (pictured) was the longest-serving chancellor, with more than thirteen years in office, while Arthur Seyss-Inquart was the shortest-serving chancellor, with two days in office, and Walter Breisky was the shortest-serving acting chancellor, with only one day in office. (Full list...)