The routine at the Convention Center on Wednesday in Denver by way of the Roll Call was put to an end by none other than Senator Obama's chief rival in the primaries Senator Hillary Rodham Clinton.

The New York Democrat called for a suspension of rules and asked for the nomination of 47-year-old Illinois Democrat by acclamation which was then put forward to a voice vote by the Speaker of the House of Representatives Nancy Pelosi.

"Let's declare together with one voice right here, right now that Barack Obama is our candidate and he will be our president," Senator Clinton said as she sought to put an end to the roll call proceedings where states announced their votes in an alphabetical order. Some states were splitting their delegations and voting for Senator Clinton but a solid majority was with Obama.

Clinton asks delegates to make Obama's selection unanimous "in the spirit of unity, with the goal of victory." They agreed, with a roar.

Slogans of "Obama" and "Yes we can" floated up from the convention floor as Obama's victory was sealed.