Looking at the Wikipedia polling table that have been three main phases since Johnson left office in September.
Firstly the Tories appear to get a bit of a boost and we saw quite number of polls where the LAB lead was down in single digits. The best from Opinium at the end of September had it down to 5%
Then we had the Kwartang budget which was widely criticised from the start and saw a big decline in Tory poll ratings. Quite a few had LAB leads in the 30s but that has eased and we’re now seeing more stability.
There have been quite a few recent polls with the LAB lead in the teens. The big question is will this narrow further into single digit territory? My guess is that it will.