David Cameron is narrowly winning the battle for floating voters, according to a major poll out today. The ComRes survey of 4,000 undecided voters found a slim majority have been more impressed with the performance of the Prime Minister than that of Ed Miliband during the Election campaign. A separate poll of marginal seats by the former Tory treasurer Lord Ashcroft suggests that Ukip’s vote is being squeezed in key constituencies as election day approaches. A ComRes survey of 4,000 undecided voters across the UK found a slim majority have been more impressed with the performance of Prime Minister David Cameron than that of Ed Miliband during the Election campaign . It also suggests Education Secretary Nicky Morgan is set to hold her marginal seat in Loughborough. Today’s ComRes survey, for ITV’s Good Morning Britain show, found that 37 per cent of floating voters have been impressed with Mr Cameron’s performance on the campaign trail so far, compared with 31 per cent who think Mr Miliband has done well. Nigel Farage was just behind on 30 per cent. Meanwhile, SNP leader Nicola Sturgeon, has impressed 21 per cent of voters on the back of her strong performance in last week’s televised leaders’ debate. Ms Sturgeon appears to have been biting her nails . Is the pressure starting to tell on Nicola Sturgeon? From the look of her hands as she met her party’s candidates in Aberdeen yesterday, it looks like the 44-year-old SNP leader has been struck by a bout of behind-the-scenes finger-chewing. Mr Cameron also suffered less badly from negative appraisals. While 49 per cent said they were ‘unimpressed’ with the Prime Minister’s performance, 54 per cent said the same of Mr Miliband. But the poll also shows that politicians have yet to shift many of the undecided voters whose support is likely to be critical in next month’s election. Just 12 per cent of the group said they had made up their minds since they were last polled in March. Another 48 per cent said they had a ‘good idea’ who they would back, while 16 per cent said they were ‘starting to lean towards a certain party’. Almost a quarter (24 per cent) said they were ‘completely undecided who to vote for’. Floating voters identified the NHS as the most important issue, followed by immigration, the cost of living and the economy. Meanwhile, Lord Ashcroft’s survey of Labour-Tory marginals suggests Mr Cameron still has a lot of work to do just to hold on to the seats he won in 2010. Of ten Tory-held marginal constituencies, Labour is ahead in four seats, with the parties tied in another. Mr Cameron also suffered less badly from negative appraisals, with 49 per cent of undecided voters saying they were ‘unimpressed’ with his performance and 54 per cent saying the same of Mr Miliband (pictured) Lord Ashcroft said the study showed Ukip’s vote was being squeezed since the same seats were polled last year. ‘The Ukip share had fallen significantly – by up to 10 points – in nine of the ten seats polled,’ he said. The decline in Ukip support has helped the Tories consolidate their grip in Blackpool North, Pendle, Gloucester, Kingswood and Mrs Morgan’s Leicestershire constituency. The Education Secretary, whose 3,744 majority is the smallest in the Cabinet, is now nine points ahead of the Labour challenger. But Labour also appears to be benefiting from the squeeze in Ukip support in some areas, moving ahead of the Tories in Harrow East and increasing its lead in the Tory-held seats of Hove, Stockton South, and Morecambe and Lunesdale. In Pudsey, West Yorkshire, Labour and the Conservatives were tied with 40 per cent each. Nigel Farage said he was not concerned about the Ashcroft polls, saying: ‘In areas where the two big parties are firing heavy artillery and we are not, it is perhaps not entirely surprising.’ Ed and Justine Miliband on the campaign trail . Ed Miliband’s wife has revealed how he led her to believe he was single when they met at a dinner party – at the home of the woman he was dating. Justine Miliband said she was furious to discover he was seeing another woman. She also described how that evening, the future Labour leader bored her by insisting on talking about economics. Mrs Miliband told the Daily Mirror: ‘I thought he was good looking and clever and seemed to be unattached. But we just went down a conversational cul-de-sac. ‘Apparently we had nothing in common. He wanted to talk about economics – one of my least favourite subjects. None of our conversations went anywhere.’ The unpromising start to their relationship was compounded when she found out he had been going out with the woman who invited them to dinner. ‘I was furious. I bumped in to him a couple of times after that, but we didn’t start seeing each other for at least a year,’ she said. Speaking while she was campaigning in Runcorn, Cheshire this week, Mrs Miliband said: ‘Canvassing in the rain always reminds me of falling in love with Ed in 2005. ‘I had never been out leafleting before and didn’t realise you had to keep your eye out for dogs on the other side of the letterbox. ‘I’d been bitten by a Doberman. Ed bandaged me up and I fell in love with him.’ Labour slammed for 'weaponising child sex abuse in campaign . Shadow home secretary Yvette Cooper released figures which showed reports of child sex abuse have risen by 60 per cent over the past four years . Labour was last night accused of ‘weaponising’ child abuse after blaming the Coalition for a rise in child sexual exploitation. Shadow home secretary Yvette Cooper released figures which showed reports of child sex abuse have risen by 60 per cent over the past four years, while arrests for these offences have fallen by 9 per cent. The Tories said the figures were ‘false’, and accused Labour of ‘playing politics’ with an ‘appalling crime’. They said the rise in reports was due to more awareness of the issue in light of scandals in Labour council areas such as Rochdale and elsewhere. Last night Conservative MP Julian Smith said: ‘Is there no level to which Labour won’t stoop? First they tried to weaponise the NHS, now this. It’s disgusting.’ Miss Cooper claimed the figures showed police are not able to respond to the scale of the reports, pointing out that over the past four years, almost 17,000 officers have been cut. She added: ‘[Tory] plans for deeper cuts in the next Parliament cutting over 20,000 police would be deeply damaging to the fight against child abuse.’ A Tory spokesman said: ‘Child abuse is an appalling crime, and no one should play politics with it. Labour’s conclusions are false. They are talking about the amount of crime that is reported to the police. ‘But for many people, child sexual abuse has been a hidden crime which is only now coming to light, and it is good that more people are having the courage to come forward. Rather than making up numbers about police officers, Labour should support the action we have taken to expose this evil crime, to prosecute the perpetrators and to support survivors.’
Survey of 4,000 undecided voters found slim majority favour Prime Minister .
37% of floating voters impressed with Cameron while 31% with Miliband .
Separate poll suggests Ukip’s vote is being squeezed in key constituencies .