They seem to have got themselves into this position in a very muddled way. Their official policy has always been to renegotiate a “better” deal than the Tories. However over a period of time shadow cabinet members like Keir Starmer have been saying that Labour’s policy is for a second referendum and that they would back remain. This now seems to be official policy but without ditching the first one to renegotiate a new deal.
Andrew Neil took John Healey (housing spokesman I think) to task on it last night. It was a car crash interview and I suspect it won’t stand up to scrutiny for too long before it is changed.