BAGHDAD, Iraq — Iraq's electoral commission Thursday certified the results of the Jan. 30 elections and allocated 140 National Assembly seats to the United Iraqi Alliance, giving the Shiite-dominated party a majority in the new parliament.

The certification sets the stage for the first meeting of the National Assembly, which will have 10 months to draft a new constitution.

The assembly's first order of business will be to elect a president and two vice presidents to largely ceremonial positions. The assembly then will approve a prime minister nominated by the president and vice presidents.

The Shiite-led alliance's majority in the assembly had been expected, based on projections from the final results announced Sunday. The clergy-backed ticket won 48 percent of the vote and the Kurdish alliance received 26 percent of the vote, giving it 75 seats. Prime Minister Ayad Allawi, a secular Shiite who supported strong ties to Washington, won 14 percent.

A redistribution of the votes from the 99 parties that did not win enough support to get parliament seats gave the Shiite alliance control of more than half of the assembly's 275 seats, even though they received slightly less than half the vote.

It appeared only 12 party groupings would take seats.

Even though the United Iraqi Alliance has a majority of seats in the assembly, it still needs partners. A two-thirds majority is needed to select a president and two vice presidents, who will in turn choose a prime minister to run the day-to-day government.

The current appointed government will now set a date for installing the new elected government. There has been no indication of how long that might take, and the timing will depend on back-room dealmaking among the parties.

The certified results were announced after a deadline to file complaints expired Wednesday. Farid Ayar, a spokesman for the election commission, told Al-Arabiya television that 47 complaints were filed and most of them were resolved.

Abdul Hussein Hindawi, the head of election commission, said, "The commission received a number of complaints, and investigated it carefully and sorted it out."

Carlos Valenzuela, the chief U.N. election expert in Iraq, said the election results were "the definition of difficult."

"The elections were not perfect. They were never meant to be, but they were extremely good elections," he said.

Top Shiite politicians have agreed to choose their nominee for prime minister through a secret ballot, expected to take place Friday, to decide a two-man race between Ibrahim al-Jaafari and Ahmad Chalabi.

The contrast between the two candidates is stark and reveals a division within the clergy-endorsed alliance, made up of 10 major political parties and various allied smaller groups.