Starmer: Cross-party deal on Brexit must include second referendum
Sir Keir Starmer said any cross-party Brexit deal must be put to a confirmatory referendum in an interview with the Guardian yesterday.
The shadow Brexit secretary said up to 150 Labour MPs would otherwise vote against it.
He also warned that Labour could end the cross-party discussions at any point if it became clear that May and her team were unwilling to make concessions.
Discussing the talks, Starmer said: "If the point of the exercise is to get a sustainable majority, over several weeks or months of delivering on the implementation, you can’t leave a confirmatory vote out of the package."
Labour go into the European elections on May 23 on the back of a disappointing result in the local elections, where they lost 63 councillors.
Starmer said the party had to prevent Labour remain voters from looking towards the Lib Dems or Change UK by reassuring them that only Labour can secure a confirmatory vote on Brexit.
"On the critical issues, like a close economic relationship with the EU, and a confirmatory vote, only Labour can deliver on those," he said.
In the latest Opinium/Observer poll in the run up to the European elections, Labour are expected to gain 21 per cent of the vote, second to the Brexit party on 34 per cent.
The Conservative party are polling in fourth at 11 per cent and below the Lib Dems, who were resurgent in the recent local elections.