A new poll by YouGov for the Fabian Society, gives Keir Starmer’s party is a staggering 34 points ahead of the Conservatives in their 150 target constituencies.
Across the country, Labour’s lead is at 24 points with the election just months away.
The findings are further confirmation of the trend demonstrated by a succession of opinion polls since the start of the year, which have all shown Labour’s lead over the Tories is growing.
Support for Labour stands at 52% in the 150 key seats, with the Tories on just 18%. In the country at large, Labour is on 46% with the Conservatives on 22%.
Ben Cooper, the Fabian Society research manager and the man who led the research, said: “At the start of this parliament, the Fabian Society released analysis of marginal seats showing the huge mountain Labour had to climb to return to government in one term.
“This new polling data shows the party may be able to turn a mountain into a molehill.
“However, Labour is right to argue that there is no room for complacency. The significant portion of ‘don’t know’ voters and levels of support for Reform shows that there is still a lot of work to do between now and poling day to turn an opinion poll of marginal seats into real election results.”
The polling data emerged as former Tory cabinet minister Simon Clarke warned his party is heading for an electoral “iceberg” unless it dumps Rishi Sunak.