Cameron struggles to make Britons believe his EU message - poll

Prime Minister David Cameron is struggling to convince voters he is telling the truth about why Britain should stay in the European Union and his main "Out" rival Boris Johnson is doing a better job, an opinion poll found. Only 21 percent of respondents in the survey carried out by polling firm ComRes agreed that Cameron was more likely to tell the truth about the EU than Johnson while 45 percent said Johnson was more believable than Cameron. With less than six weeks to go until the June 23 refe