The survey, conducted by pollsters Find Out Now, indicates that a Corbyn-Sultana party could significantly dent Labour’s share of the vote. Of the 650 people polled, 15% said they would support the new party, matching Labour’s 15% share.

The greatest level of support for a potential new party comes from those aged 18–29, with 33% saying they would back a new left-wing party — ahead of Reform UK (24%) and Labour (18%).

Sultana, MP for Coventry South, resigned the Labour whip earlier this month to focus on leading a new party with the former Labour leader. There has not yet been a formal launch, but Mr Corbyn has pledged the party will “be for justice”.