The interviews I was hearing yesterday were all saying how unpopular Starmer was on the doorstep.
None of them said why that was.
On the way forward, the interviewees talked about what they'd like to see.
So, it seems to be a lack of progress rather than things like Mandelson.
All of them wanted to go straight into spending other people's money from the magic money tree.
The things that made them unelectable in the first place, and camped so firmly on the left, it needed a McSwinney with Starmer cypher to drag them back.