The Labour Party has extended its lead over the Conservatives, according to the first exclusive YouGov poll of the campaign for Sky News.

One week into the race for Number 10, Labour is 27 points ahead of the Tories – erasing a small drop in the lead recorded at the end of last week.

The Great Britain poll – conducted on Monday and Tuesday this week – puts Labour on 47%, the Tories on 20%, Reform on 12%, the Liberal Democrats on 9% and Greens on 7%.

This suggests that the Tories have not yet had a bounce from Rishi Sunak’s surprise decision to go to the country on 4 July, rather than waiting until the autumn.

The party is also still struggling to bring back together the voter coalition Boris Johnson won round in 2019.

Read more about the Sky News poll tracker here

Of the Tory voters from that year, only 36% say they would vote Tory now, 19% would vote Reform UK, 19% don’t know and 14% would switch to Labour.

This is the key group identified by Conservative headquarters, and the national service announcement on Sunday was aimed at bringing this group back to the fold.

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Meanwhile, Labour leads the Tories in all parts of Great Britain and among men and women.

The only groups that have the Tories ahead are the over 65s – albeit by a far smaller margin than in 2019 – and among people who voted to leave the EU.

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