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Open Image ModalA man walks into a polling station to vote in the EU referendum, in Etherow country park in Stockport, Britain June 23, 2016. REUTERS/Andrew Yates (credit:Andrew Yates / Reuters)
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Open Image ModalA policeman stands outside a polling station in Biggin Hill, Britain June 23, 2016. REUTERS/Dylan Martinez (credit:Dylan Martinez / Reuters)
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Open Image ModalA man wearing a European themed cycling jersey arrives to vote at a polling station for the Referendum on the European Union in north London, Britain, June 23, 2016. REUTERS/Neil Hall (credit:Neil Hall / Reuters)
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Open Image ModalBritain's Prime Minister David Cameron and his wife Samantha leave after voting in the EU referendum, at a polling station in central London, Britain June 23, 2016. REUTERS/Stefan Wermuth (credit:Stefan Wermuth / Reuters)
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Open Image ModalA woman photographs her daughter after she voted at a polling station for the Referendum on the European Union in north London, Britain, June 23, 2016. REUTERS/Neil Hall (credit:Neil Hall / Reuters)
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Open Image ModalBritain's Prime Minister David Cameron and his wife Samantha leave after voting in the EU referendum, at a polling station in central London, Britain June 23, 2016. REUTERS/Stefan Wermuth (credit:Stefan Wermuth / Reuters)
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Open Image ModalPeople arrive to vote at a polling station for the Referendum on the European Union in Heald Green, Stockport, Britain, June 23, 2016. REUTERS/Andrew Yates (credit:Andrew Yates / Reuters)
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Open Image ModalElectoral workers carry signs as they prepare a polling station for the Referendum on the European Union in north London, Britain, June 23, 2016. REUTERS/Neil Hall TPX IMAGES OF THE DAY (credit:Neil Hall / Reuters)
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Open Image ModalA polling station is prepared for the Referendum on the European Union in north London, Britain, June 23, 2016. REUTERS/Neil Hall (credit:Neil Hall / Reuters)
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Open Image ModalA man carries an umbrella as he leaves a polling station for the Referendum on the European Union in north London, Britain, June 23, 2016. REUTERS/Stefan Wermuth (credit:Stefan Wermuth / Reuters)
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Open Image ModalWomen walk past a pub being used as a polling station for the Referendum on the European Union in west London, Britain, June 23, 2016. REUTERS/Toby Melville (credit:Toby Melville / Reuters)
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Open Image ModalA man puts up a sign at a polling station for the Referendum on the European Union in Heald Green, Stockport, Britain, June 23, 2016. REUTERS/Andrew Yates (credit:Andrew Yates / Reuters)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn walks with Labour Party activists as he leaves his home to cast his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn stops for a photograph with members of the public as he leaves his home to cast his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn walks with Labour Party activists as he leaves his home to cast his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn walks with Labour Party activists as he leaves his home to cast his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn leaves his home to cast his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn leaves his home to cast his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: A man holding an umbrella passes by a polling station sign during the British EU Referendum in London, United Kingdom on June 23, 2016. Voting has begun in the United Kingdoms historic referendum on its membership of the European Union. Polling stations will remain open for 15 hours until 10 p.m. local time. (Photo by Ray Tang/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
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Open Image ModalLONDON, UNITED KINGDOM - JUNE 23: Labour Party leader Jeremy Corbyn casts his vote at a polling station at Pakeman Primary School in Islington on June 23, 2016 in London, England. The United Kingdom is going to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Matt Cardy/Getty Images) (credit:Matt Cardy via Getty Images)
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Open Image ModalA sign for a polling station is attached to a fence in Little Milton on June 23, 2016.Millions of Britons began voting today in a bitterly-fought, knife-edge referendum that could tear up the island nation's EU membership and spark the greatest emergency of the bloc's 60-year history. / AFP / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:ADRIAN DENNIS via Getty Images)
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Open Image ModalA Polling Station sign for the Referendum on the European Union is erected in the village of St Florence, Near Tenby, Pembrokeshire in Wales, June 23, 2016. REUTERS/Rebecca Naden (credit:Rebecca Naden / Reuters)
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Open Image ModalSigns are put up outside the polling station at West Blatchington Windmill near Brighton, in southern England on June 23, 2016, as Britain holds a referendum on wether to stay or leave the European Union (EU).Millions of Britons began voting Thursday in a bitterly-fought, knife-edge referendum that could tear up the island nation's EU membership and spark the greatest emergency of the bloc's 60-year history. / AFP / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images) (credit:GLYN KIRK via Getty Images)
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Open Image ModalA general view of a polling station at the White Horse Inn in Priors Dean, Hampshire, also known as the 'Pub with no name' , as voters head to the polls across the UK in a historic referendum on whether the UK should remain a member of the European Union or leave. (credit:Andrew Matthews/PA Wire)
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Open Image ModalPresiding officer Ahmed Z Jamee prepares to open the polling station at West Blatchington Windmill near Brighton, in southern England on June 23, 2016, as Britain holds a referendum on wether to stay or leave the European Union (EU).Millions of Britons began voting Thursday in a bitterly-fought, knife-edge referendum that could tear up the island nation's EU membership and spark the greatest emergency of the bloc's 60-year history. / AFP / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images) (credit:GLYN KIRK via Getty Images)
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Open Image ModalTOPSHOT - A presiding officer (L) and poll clerk (C) drink a cup of tea while waiting for early morning voters at a polling station set up in a launderette in Headington outside Oxford on June 23, 2016.Millions of Britons began voting today in a bitterly-fought, knife-edge referendum that could tear up the island nation's EU membership and spark the greatest emergency of the bloc's 60-year history. / AFP / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:ADRIAN DENNIS via Getty Images)
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Open Image ModalSALTBURN-BY-THE-SEA, UNITED KINGDOM - JUNE 23: A dog is tied to railings outside a polling station waiting for its owner to cast their vote on the EU Referendum on June 23, 2016 in Saltburn-by-the-Sea, United Kingdom. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Ian Forsyth/Getty Images) (credit:Ian Forsyth via Getty Images)
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Open Image ModalOfficials wait for voters inside a polling station being used in the EU referendum in a guest house annex in Dogmersfield, Hampshire. (credit:Andrew Matthews/PA Wire)
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Open Image ModalSALTBURN-BY-THE-SEA, UNITED KINGDOM - JUNE 23: A dog is tied to railings outside a polling station waiting for its owner to cast their vote on the EU Referendum on June 23, 2016 in Saltburn-by-the-Sea, United Kingdom. The United Kingdom has gone to the polls to decide whether or not the country wishes to remain within the European Union. After a hard fought campaign from both REMAIN and LEAVE the vote is too close to call. A result on the referendum is expected on Friday morning. (Photo by Ian Forsyth/Getty Images) (credit:Ian Forsyth via Getty Images)
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Open Image ModalVoters arrive the polling station set up at the Little Braxted Bakery in Little Braxted, Essex as voters are set to go to the polls to decide whether the UK should remain in the European Union. (credit:Nick Ansell/PA Wire)