ALBANY—Negotiations collapsed again Sunday night, prolonging the three-week partisan leadership battle that has ground the 62-member State Senate to a halt with just 48 hours to go before a number of important laws will expire without the chamber’s action.

“The two sides are deadlocked in a battle against each other, and it’s difficult for them but unacceptable to us that they can’t see their way past it to address the issues that are important to the people,” Gov. David A. Paterson said after emerging from a 90-minute closed-door meeting with Senate Democrats.

The governor has angered many Democrats with his soaring rhetoric against his fellow party members in public forums and his decision to keep calling the Senate into special session every day until a deal is reached.

Negotiators said tentative deals have been reached on such issues as sharing resources for staff and pork barrel spending. But the stumbling block remains the issue of who runs the Senate.

Sen. Pedro Espada Jr., a Bronx Democrat, says he is Senate president following the June 8 coup in which he sided with 30 Republicans to take over the Senate. Democrats insist Sen. Malcolm A. Smith of Queens, whose power has been significantly weakened by his fellow Democrats since the coup, remains the legal Senate president.

Democrats say they want to put aside the leadership spat and just enact bills that are necessary in the coming days. Republicans and Espada say the state can’t afford to leave the Senate leadership issue unresolved because that would risk stalemates down the road over important legislation or lingering questions over who is first in line of gubernatorial succession, a position now held by the Senate president.

Paterson has ordered another session for 3 p. m. today. The agenda lists 101 bills, such as a measure to begin a new construction program for Buffalo Public Schools and 34 county sales tax surcharges—including Cattaraugus and Niagara counties — that are set to expire in November.

The dispute will return to court today. Last week, Paterson asked a judge to force the two sides to convene in a special session at the same time — instead of the separate partisan gatherings — so he could get a quorum to pass his bills.