This report contradicts what you claim. There were three main reasons, two of which strongly linked to Brexit, for people not voting Labour. Negativity around Corbyn played a part, but it was a Brexit election first and foremost.
The Tory position was clear. The Labour position (Starmer’s) was...
It is quite right that Starmer is still judged to on his ‘final day’ referendum policy thought up whilst he was in post as shadow Brexit secretary.
It lost Labour MPs seats in constituencies that had largely voted leave.
Except at the last general election when he was the architect of Labour’s ‘negotiate a better deal and then give the people a second vote on it’ manifesto pledge. The pledge that cost Labour many of the ‘red wall’ seats...