The Tories have jumped to a six point lead over Labour in the polls, putting David Cameron within striking distance of an overhaul majority. With just over three weeks until polling day, 39 per cent of voters now say they will back the Conservatives compared to just 33 per cent for Labour, according to the pollsters ICM. The shock poll, published this afternoon, comes after the Tories unveiled their key election pledge to scrap inheritance tax on family homes worth up to £1million. Scroll down for video . With just over three weeks until polling day, 39 per cent of voters now say they will back the Conservatives compared to just 33 per cent for Labour, according to the pollsters ICM . Bad news: Just 33 per cent of voters plan on supporting Ed Miliband, pictured at the Labour Manifesto Launch, in the upcoming election . It came after a series of polls had suggested Labour had pulled slightly ahead of the Tories and will be a major blow to Ed Miliband in the wake of the his manifesto launch today. According to the ICM poll for the Guardian, the Tories have jumped three per cent in the last month – while Labour has dropped two points. The Lib Dems remain unchanged on 8 per cent – with Ukip even further behind on 7 per cent, tied in fourth place with the Greens. However, a separate poll by the Tory peer Lord Ashcroft had to two parties tied on 33 per cent. Ukip and the Lib Dems are each up three points at 13 per cent and 9 per cent. But the Tory campaign will be buoyed by the Guardian ICM poll which gives the party its strongest public support since 2012 – and three points higher than it achieved in 2010. According to the ICM poll for the Guardian, the Tories have jumped three per cent in the last month – while Labour has dropped two points . David Cameron, buoyed by a new poll today, was out campaigning in Alnwick, Northumberland, today . Mr Cameron has consistently claimed the Tories can win a working majority at the election – having fallen just short five years ago. The Prime Minister needs another 23 seats to take the number of Tory MPs in the House of Commons to 326. Mr Cameron has pitched the election as a straight choice between himself and Mr Miliband and will be encourage by further findings buried in today's poll, showing that voters are increasingly happy with his performance as Prime Minister. Ed Miliband, unveiling Labour's manifesto in Manchester today, suffered a blow today after polls showed he was falling behind David Cameron in the race for Number 10 . The survey gives Mr Cameron a public satisfaction rating of plus 18 – with 52 per cent of voters saying he is doing a good job, and only 34 per cent suggesting he is doing badly. Only in November, Mr Cameron's net score was -3 last November. Mr Cameron's personal rating remains comfortably ahead of Ed Miliband's – with the Labour leader languishing on -30. Mr Cameron's standing is also streets ahead of that of all the other political leaders – with Nick Clegg stuck on -20 and Nigel Farage on –16. Mr Cameron and the Chancellor George Osborne are also the most 'trusted team to run the economy properly' for 44 per cent of voters. This is compared to just 17 per cent who would rather trust Mr Miliband and Ed Balls.
New polls shows 39% of voters now say they will back the Conservatives.
This is compared to  just 33% for Labour, according to the pollsters ICM.
Comes after Tories pledged to scrap inheritance tax on homes up to £1m.
The Conservatives only scored 36% in the general election in 2010.
A separate poll published today showed the parties tied on 33% each.