updated 2:54 p.m. ET July 18, 2005

SINGAPORE - Britain vs. France. Blair vs. Chirac. Two historic rival cities convinced they were long overdue.

London prevailed — upsetting Paris to secure the 2012 Olympics.

The British capital overcame its cross-Channel opponent 54-50 Wednesday on the fourth ballot of the International Olympic Committee vote, capping the most glamorous and hotly contested bid race in Olympic history.

Moscow, New York and Madrid were eliminated in the first three rounds.

London got the Olympics for the first time since 1948, while Paris was frustrated for a third time in 20 years. It hasn’t held the games since 1924.

Paris had been the front-runner throughout the campaign, but London picked up momentum in the late stages with strong support from Prime Minister Tony Blair.

“Many people do reckon that London is the greatest city in the whole world at the moment,” an exultant Blair said after hearing the result in Gleneagles, Scotland, where he is hosting the G-8 summit.

Blair, who spent two days lobbying in Singapore this week, said he “couldn’t bear to watch” the vote on TV and only heard the result when he received a call from the switchboard at his Downing Street office in London.

“This is a momentous day for London,” he said.

London’s victory handed Paris a third stinging Olympic defeat in 20 years, following failed bids for the 1992 and 2008 Olympics. Paris hasn’t hosted the games since 1924.

Slide show   London 2012 London won the right to host the 2012 Summer Olympic Games and plans to transform 1,500 acres of east London's Lower Lea Valley into the main Olympic site.

“I’ll put all my energy into our recovery, so that we know how to make something big and positive out of this ordeal,” Paris Mayor Bertrand Delanoe said.

IOC president Jacques Rogge opened a sealed envelope and declared the result in a live televised ceremony: “The International Olympic Committee has the honor of announcing that the Games of the 30th Olympiad in 2012 are awarded to the city of London.”

The tan-suited London delegates in the convention hall leaped out of their seats, arms raised in jubilation and cheering wildly.

LONDON WINS 2012 GAMES London named surprise host for Olympics New York ‘disappointed’ to be denied Analysis: N.Y. never had a chance for bid Sights, sounds of London’s 2012 joy   Slide show: Tour London Olympic venues MSNBC.com: ‘We've won, ’ave we?’

In London, crowds cheered and waved flags as they watched the announcement from Singapore on a giant screen in Trafalgar Square, and in the east London area where the main Olympic complex will be based.

“I’m absolutely ecstatic, we have the opportunity to do what we always dreamed about, getting more young people into sport,” London bid leader Sebastian Coe said. “This is our moment. It’s massive. It’s huge. This is the biggest prize in sport.”

Even England soccer captain David Beckham got into the act.

“In 2012, I can take my children to an Olympics which we might never had had the chance to do,” he said. “This is such a huge lift for our country.”

Rogge expressed delight with London’s victory.

“We are very, very pleased with the victory of London,” he said. “People we trust, people we know will give us a superb games.”

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