Comment by dfawcus
Well even at the GE, his party was less popular than the previous offer by Corbyn. Labour only really got in because of the collapse of the Tory vote.
2019 GE Votes
Labour: 10,269,051 22% R 32% T
Tory: 13,966,454 29% R 44% T
LibDem: 3,696,419 8% R 12% T
Labour: 9,708,716 20% R 34% T
Tory: 6,828,925 14% R 24% T
LibDem: 3,519,143 7% R 12% T
So that he got even more unpopular seemed a given, unless he managed to be competent and actually improve things for the people who elected his party.