Theresa May on a visit to Plymouth Fisheries this morning. The predicted result would be a disaster for the Tory leader who called an election in the hope of securing a landslide

The Conservative Party could be in line to lose 20 seats and Labour gain nearly 30 in next week’s general election, according to new modelling by one of the country’s leading pollsters.

YouGov’s first constituency-by- constituency estimate of the election result predicts that the Tories would fall short of an overall majority by 16 seats, leading to a hung parliament.

The central projection of the model, which allows for a wide margin of error, would be a catastrophic outcome for Theresa May, who called the election when polls pointed to a landslide result. Her support appears to have plunged after the poor reception of the party manifesto, including plans to make more elderly voters pay for home care.

YouGov’s model puts the Tories on course