THOUSANDS of Labour voters will desert Gordon Brown at the next general election if he refuses to hold a referendum on the EU constitution a poll reveales. Almost a quarter of the party's life-long supporters --24 per cent- say they will kick the PM in the ballot box unless they get a vote. A Sun survey has revealed that four out of five of all voters want a say on wheather Britain signs a treaty giving more power to Brussels. And Half say they will switch to the Tories if Mr. Cameron pledges a referendum if he wins.
