London supporters of presidential frontrunner Barack Obama are working tirelessly to register the capital's estimated 150,000 US citizens to vote.
As the race for the White House enters a crucial stage canvassers are targeting areas popular with Americans such as the West End and Kensington High Street.
'Zone captains' have been appointed to lead groups of leafleters and weekly meet-ups are being held at the Yorkshire Grey Pub, in Langham Street, Fitzrovia, to decide where to deploy the 200 or so Obama London supporters.
"We're finding ex-pats wherever they may gather; universities, farmers' markets and bars showing major American football games," says activist and Marylebone resident, Rob Carolina.
"Whole Foods in Kensington High Street is a particluarly good spot for our canvassing."
The momentum is with their campaign and - in London at least - there is no sign of a rival McCain camp just a four weeks before the November 4 poll.
"I'm still really nervous about the election, it's still so close," adds Kendra Covert, 25, a graduate from Los Angeles. "It's sad to be away from home at this crucial time, but we'll be watching it together with other ex-pats in London come election night."
Her partner, Sarah Jost, says Senator Obama is the only man able to turn around the reputation of America.
"Before we left the States we were told to pretend to be Canadians to avoid any conflict with Europeans. It's pretty sad when you have to deny who you are - but that's Bush's legacy," she adds.
There are an estimated 6 million US citizens living abroad and the Democrat campaign is aiming to persuade 1milllion of them to turnout for Obama. The belief is that ex-pats have a different, more liberal, worldview to many of the compatriots back home, and are likely to vote for Senator Obama.
"I buy my kids McCain oven chips," says Liz, from Illinois, standing outside Whole Foods in Kensington High Street. "Just so we can eat him for lunch."
