If Jeremy Corbyn repeats his poll results in the election, he will outpoll both Ed Miliband and Gordon Brown.
The ORB poll for the Sunday Telegraph had Tories down two points in the past week on 44 per cent, six points ahead of Jeremy Corbyn’s Labour on 38 per cent (up four points), with Lib Dems on 7 per cent (unchanged) and Ukip on 5 per cent (down two).
The 38 per cent score equals Labour’s best rating since Mr Corbyn became leader and would see him comfortably outpoll Ed Miliband and Gordon Brown’s election results if repeated on June 8.
In the Sunday Times, a YouGov poll put Tories seven points ahead on 43 per cent (unchanged since a similar poll on Friday), with Labour down two points on 36 per cent, Lib Dems down a point on 9 per cent and Ukip unchanged on 4 per cent.
An Opinium poll for The Observer found the Tory advantage had fallen from 13 to 10 points over the past week, with Theresa May’s party on 45 per cent (down one point), with Labour on 35 per cent (up two), Liberal Democrats on 7 per cent (down one) and Ukip on 5 per cent (unchanged).
And a ComRes survey for the Sunday Mirror and Independent showed the gap between the parties narrowing from 18 to 12 points over the past fortnight, with Tories on 46 per cent (down two), Labour on 34 per cent (up four), Lib Dems on 8 per cent (down two) and Ukip 5 per cent (unchanged).
Although the results are less dramatic than Friday’s YouGov survey, which found the Conservative advantage squeezed to just five points, they tally with the trend in a number of polls which have shown Labour gaining on the Tories after having begun the election race as much as 25 points adrift.
All the surveys were conducted after Monday’s suicide bomb in Manchester.
The ComRes poll found Mrs May was rated best leader to keep Britain safe from terrorism, by a margin of 42 per cent to 16 per cent for Mr Corbyn.
But her ratings on this and almost every other measure had declined over the fortnight since the questions were last asked, while the Labour leader’s had improved.
Labour was preferred by a margin of 42 per cent to 37 per cent for having the “best policies for people like me and my family”. But 51 per cent said that Mrs May would make a better PM, compared with 30 per cent for Mr Corbyn.
The Prime Minister was seen as best choice to represent Britain on the world stage, lead negotiations on Brexit and reduce net migration, while Mr Corbyn was rated best to improve the NHS, look after the interests of hard-working families and protect older people.
The ORB poll suggested a shift towards Mr Corbyn among women over the course of the campaign, with the proportion saying they would vote Labour rising from 31 per cent to 40 per cent since mid-May.
The Opinium poll found Mrs May’s approval ratings had slumped from plus-17 to plus-11 over the week, while Mr Corbyn’s rose from minus-18 to minus-11.
• Opinium questioned 2,002 people from May 23 to 24. ComRes interviewed 2,024 adults from May 24 to 26. ORB interviewed 1,500 voters on May 24 and 25. YouGov’s poll of 2,003 people was conducted on May 25 and 26.