New poll shows May's lead down to 5 points as her campaign struggles

By Michael HoldenLONDON (Reuters) - British Prime Minister Theresa May's once formidable lead has been eroded to a slender advantage, an opinion poll indicated on Friday as her campaign was dealt a blow when one of her candidates was charged with electoral fraud.With less than a week before polling day on Thursday, May's Conservatives now lead the opposition Labour Party by just five percentage points, down from 15 just over two weeks ago, according to the survey from Ipsos MORI.The poll put the