CAIRO – With the passage of a divisive constitution, Egypt's Islamist leadership has secured its tightest grip on power since Hosni Mubarak's ouster nearly two years ago and laid the foundation for legislation to create a more religious state. The opposition's response — a vow to keep fighting the charter and the program of President Mohamed Morsi — ensured that the turmoil of the past two years will not end as many, especially the tens of millions of poor craving stability, had fervently hoped. “The referendum is not the end game. It is only a battle in this long struggle for the future of Egypt,” the opposition National Salvation Front said in a strongly worded statement Sunday. “We will not allow a change to the identity of Egypt or the return of the age of tyranny,” added the front, which claims the new constitution seeks to enshrine Islamic rule in Egypt and accuses the Islamists of trying to monopolize power. Critics say the new constitution does not sufficiently protect the rights of women and minority groups and empowers Muslim clerics by giving them a say over legislation. Some articles were also seen as tailored to get rid of Islamists' enemies and undermine the freedom of labor unions. Morsi's Muslim Brotherhood, Egypt's most powerful political organization in the post-Mubarak era, claimed early Sunday that the charter it had backed was approved in the two-stage vote with a 64 percent “yes” vote overall. Morsi is expected to call for a new election of parliament's lawmaking lower house within two months. And if all of the elections since Mubarak's February 2011 ouster are any predictor, Islamists will again emerge dominant. In the last parliamentary vote in late 2011, the Muslim Brotherhood and its allies won about 70 percent of seats. If Islamists win the overwhelming majority again, there is nothing to stop their lawmakers from legislating in support of their longtime goal of turning Egypt into an Islamic state. The Islamists could also move early to pass laws restricting vibrant and outspoken privately owned media organizations that have flourished since the uprising and reported critically on Morsi and the Brotherhood. Egypt analyst Michael W. Hanna said, however, that enduring political tensions will make it difficult for the Islamists to push ahead with any major or sensitive legislation. “There will be a huge domestic backlash to any unpopular legislation, especially when it comes to the economy or the media,” said Hanna of New York's Century Foundation. Until the lower house is elected and seated, parliament's upper chamber, the Shoura Council, will temporarily assume legislative powers and may give priority to more pressing issues. After the opposition brought hundreds of thousands of protesters to the streets in the past four weeks, including tens of thousands outside Morsi's presidential palace in Cairo, the Shoura Council is expected to hurriedly debate and vote on a legislation that would place tight restrictions on the right to demonstrate. – AP