to negotiate on legislation if they are of opposing parties. During the tenure of the pan-Green's Chen Shui-bian the continued control of the Legislative Yuan by the pan-Blue majority caused legislation to repeatedly stall, as the two sides were deadlocked. There is another curiosity of the ROC system; because the ROC was previously dominated by strongman one-party politics, real power in the system shifted from one position to another, depending on what position was currently occupied by the leader of the state (Chiang Kai-shek and later his son, Chiang Ching-kuo). This legacy has resulted in executive powers currently being concentrated in the office of the president rather than the premier. Legislative Yuan The main legislative body is the unicameral Legislative Yuan with one hundred and thirteen seats. Seventy-three are elected in single member districts; thirty-four are elected based on the proportion of nationwide votes received by participating political parties, and six seats are reserved to represent aboriginal groups. Members serve four-year terms. Although sometimes referred to as a "parliament", the Legislative Yuan, under Sun's political theory, is a branch of government, while only the National Assembly of the Republic of China, which is now abolished, with the power to amend the constitution and formerly to elect the president and vice president, could be considered a parliament. However, after constitutional amendments effectively transferring almost all of the National Assembly's powers to the Legislative Yuan in the late 1990s, it has become more common for newspapers in Taiwan to refer to the Legislative Yuan as the nation's "parliament" (國會, guóhuì). Judicial Yuan The Judicial Yuan is the ROC's highest judiciary. The President and Vice-President of the Judicial Yuan and fifteen Justices form the Council of Grand Justices. They are nominated and appointed by the President of the Republic, with the consent of the Legislative Yuan. The highest court, the Supreme Court, consists of a number of civil and criminal divisions, each of which is formed by a presiding Judge and four Associate Judges, all appointed for life. In 1993, a separate constitutional court was established to resolve constitutional disputes, regulate the activities of political parties and accelerate the democratization process. There is no trial by jury but the right to a fair and public trial is protected by law and respected in practice; many cases are presided over by multiple judges. Capital punishment is legal. Efforts have been made by the government