https://en.wikipedia.org/wiki/Opinion_polling_on_Scottish_independence#Post-referendum_polling

Leaving aside the YouGov/Hanbury poll in February, we have three Yes leads, two clear at 3%, two tied and one marginal No lead at 1%, in March.

The latest poll from YouGov for James Kelly, with fieldwork between 28 May and 5 June gives Yes a 3 point lead of 52% to 48%, with the undecided removed.

Detail and analysis at: http://scotgoespop.blogspot.com/2020/06/scot-goes-pop-panelbase-poll-yes-storms.html