New York Sen. Hillary Clinton ended a state-by-state convention roll call in a surprise acclamation, naming her former rival Sen. Barack Obama the official presidential nominee for the Democratic Party.

As per roll call procedure, each state and U.S. territory, in alphabetical order, had representatives announce how many of their delegate votes went to Sen. Obama and how many to Clinton. When the call came to the state of New York, Clinton appeared on the convention floor and ended the state-by-state roll call by requesting that “the convention suspend the procedural rules and suspend the further conduct of the roll call vote.”

“I move that Senator Barack Obama of Illinois is to be selected but this convention by acclamation as the nominee of the Democratic Party,” Clinton said.

While the roll call vote was largely symbolic and the Illinois senator’s nomination a foregone conclusion, Clinton’s acclamation was largely unexpected and received enthusiastic cheers from the entire convention hall, particularly from those who supported her during the hard-fought primaries.

Delegates throughout the Pepsi center sang, danced and jubilantly joined hands to the O’Jays’ “Love Train.”

Clinton’s name was added to the nomination list earlier this month in a show of respect for the New York senator and her many supporters. Hours before delegates took to the floor to cast their convention votes, Clinton “released” her delegates, allowing them to vote instead for Obama.

After Clinton’s call to end the state-by-state vote, House Speaker Nancy Pelosi brought Clinton’s proposal to the convention floor, where she could barely be heard over the delegates’ screams.

With a resounding “yay” from the arena for all those in favor of the motion, the roll call was ended.

“It with great pride that I announce that Barack Obama is the Democratic nominee for President of the United States by acclamation,” Pelosi said, adding, “I have been asked to inform you that Senator Obama accepts the nomination and will deliver his acceptance speech to be held the fourth session of the convention at Invesco Field.”