Labour has a three-point lead over the Conservatives, according to a new poll.
The survey, by Opinium for The Observer newspaper, put Labour on 42 per cent, with the Tories on 39 per cent.
It is the first time Labour has been ahead of the Government since early July 2019, when Theresa May’s time in office was coming to an end.
The poll also suggested 55 per cent of voters believe Sir Keir is ready to be prime minister.
Meanwhile, 40 per cent believe Labour is ready to form the next government.
It is the latest poll to suggest unease among voters at Mr Johnson’s handling of the coronavirus crisis.
In the early stages of the pandemic, 65 per cent of voters surveyed backed the Government’s handling of Covid-19.
But the latest poll suggested only 30 per cent now approve.