New poll figures show Labour ahead of the Conservatives for the first time since Jeremy Corbyn took over as leader.
Labour is now six points ahead of the Tories and is polling at 45%, whereas the Conservatives are only on 39%, according to a Survation poll.
The poll was created for the Mail on Sunday and also shows a swing of eight points in favour of Labour since the general election, which took place last week (June 8).
The latest figures suggest Labour have achieved a 28-point swing since Theresa May called the General Election.
Although the Tories won the general election they did not secure a majority, and May is now negotiating with the Democratic Unionist Party in an attempt to run a minority government as her administration remains mired in crisis.
She is expected to ask for a confidence-and-supply deal, whereby the DUP would forego seats in the cabinet but demand the government meet some of its key demands, and decide whether to support the government's legislation on a case-by-case basis.