FILE - In this file photo taken on Tuesday, April 23, 2013, Egyptian Shura Council members meet to discuss the government's 2013-2014 budget at the Shura Council, Parliament's upper house. When voters went to the polls more than a year ago to vote for Egypt's upper house of parliament, most presumed the legislature would be the powerless talk shop that it had been for 30 years. Few candidates were known outside their families, parties or neighborhoods. Only seven percent of the electorate bothered to cast a ballot. Thanks to the twists and turns of the rocky transition that followed Egypt's 2011 uprising, the Shura Council finds itself the sole law-making body in the land. This accidental legislature is now back in the spotlight ahead of an expected court ruling on its disputed legal status _ a move that could see it dissolved. AP Photo/Amr Nabil, File Hamdy El-Fakharany, an opposition leader and former member of the now-dissolved Parliament, center, and other activists flash victory signs in front of the Supreme Constitutional Court in Cairo, Egypt, Sunday, June 2, 2013. An Egyptian court ruled on Sunday that the nation's Islamist-dominated legislature and constitutional panel were illegally elected and that the legislature's upper house, the only one currently sitting, must be dissolved when parliament's lower chamber is elected later this year or early in 2014. AP Photo/ Amr Nabil An Egyptian traffic policeman manages the traffic in front of the Supreme Constitutional Court in Cairo, Egypt, Sunday, June 2, 2013. An Egyptian court ruled on Sunday that the nation's Islamist-dominated legislature and constitutional panel were illegally elected and that the legislature's upper house, the only one currently sitting, must be dissolved when parliament's lower chamber is elected later this year or early in 2014. (AP Photo/Amr Nabil) The constitutional panel has already dissolved after completing the charter. The ruling deepens the political instability that has gripped the country since the overthrow of authoritarian leader Hosni Mubarak more than two years ago. The same court ruled to dissolve parliament's lower chamber in June, a move that led to the promotion of the normally toothless upper chamber, the Shura Council, to becoming a law-making house. It was not immediately clear whether the ruling on the 100-member constitutional panel would impact in any way on the charter it drafted. But even if it does not, the ruling will question the legal foundations of the disputed charter pushed through by allies of Islamist President Mohammed Morsi in an all-night session late last year. The Islamists who drafted it hail the document as the best one Egypt has ever had. In what appeared to be an attempt to remove any confusion over the ruling, Morsi's office issued a brief statement in which it emphasized that all state institutions must respect the constitution, that the Shura Council will continue to function as the nation's legislature and that the president will ensure that all the branches of state are fully functioning. Regardless of its consequences on the ground, Sunday's ruling is likely to prolong the polarizing political transition that followed Mubarak's overthrow. Rival political groups disagree not just on policies and the future course of the nation but on the legitimacy of the basic institutions of government. The Shura Council's critics say it is ill-equipped to be the nation's sole law-making body, and complain that it's considering legislation that will have a far reach into the future rather than simply pass what is absolutely necessary during the transition period. Of the chamber's 270 members, 180 were elected, and Morsi appointed the other 90. Five percent of its members are Christians - about half the proportion of the population - and four percent are women. When Shura Council elections were held in early 2012, not only did many voters stay away but so did many political parties - especially several of the newborn liberal groups with smaller budgets. Over 70 percent of the seats were won by Islamists. The court on Sunday also ruled unconstitutional clauses in a 1958 law giving the president far-reaching powers under a state of emergency. The invalidated clauses allowed suspects to be arrested with little recourse and placed restrictions on the freedoms of movement and assembly. The ruling comes ahead of the scheduled climax on June 30 - the president's first anniversary in office - of a campaign by anti-government protesters to collect 15 million signatures of Egyptians who want to see Morsi leave office. Morsi has yet to say whether he intends to take any action against the campaign or its organizers, who plan to stage a mass protest outside his Cairo palace on June 30. But the president's supporters have denounced as illegal the campaign, called Tamarod, or "Rebel," and there have been several street scuffles between the two sides.