LONDON—Campaigners on both sides began a final dash to win supporters ahead of Thursday’s referendum on whether the U.K. will stay in the European Union, as polls continued to suggest the vote was still being closely fought. Prominent figures including U.K. Prime Minister David Cameron, billionaire George Soros and soccer star David Beckham lined up Tuesday to warn about the risks of leaving the EU. Meanwhile, anti-EU campaigners...

Source: Wall Street Journal June 21, 2016 11:04 UTC