The ruling party leaders who resigned included the country’s most powerful political figures — and its most unpopular among many Egyptians. The move may have been aimed at convincing protesters in the streets that the regime is sincere in implementing democratic reforms they demand.

But State TV, announcing the resignations, still identified head of state Mubarak as president of the ruling party in a sign he would remain in authority. And Prime Minister Ahmed Shafiq said Saturday that stability was returning to the country, appearing confident that a deal on future reforms can be reached with the multiple opposition movements to defuse protests without the 82-year-old Mubarak necessarily leaving power immediately.

Protesters have refused to end their mass rallies in downtown Tahrir Square until Mubarak quits. Tens of thousands gathered Saturday in Tahrir, waving flags and chanting a day after some 100,000 massed there in an intensified demonstration labeled “the day of departure,” in hopes it would be the day Mubarak leaves.

Their unprecedented 12-day movement has entered a delicate new phase. Organizers fear that without the pressure of protesters on the street, Mubarak’s regime will enact only cosmetic reforms and try to preserve its grip on power. So they are reluctant to lift their demonstrations without the concrete gain of Mubarak’s ouster and a transition mechanism that guarantees a real move to democracy afterward.

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