A sub-poll of 114 Scots, for Opinium and the Observer with fieldwork on 26th February to 1st March 2019, found SNP support steady at 41% and seems to reinforce five previous sub-polls giving them between 40 and 44%:
Lib Dems 6%
But when the breakaway Independent Group (TIG) is added, we get:
Lib Dems 1%
In the YouGov/Times poll on 22-23 February, introducing TIG seemed also to lead to the destruction of the Lib Dems. In sharp contrast, it also seemed to suggest desertion of Labour taking them down to 13% and the Tories up to 30%!
In this new sample, introducing TIG appears to have stiffened Labour loyalty with some turning back from desertion to the Tories or the Lib Dems once confronted with a potentially dangerous internal threat to party survival caused by some of ‘their own’ (all English). The psychology of a Labour supporter, first selecting the Tories to defend the Union then reverting to Labour, perhaps offended by the betrayal of posh English Blairites or the apparently unending MSM obsession with anti-semitism, is fascinating.
It’s a small sample, so the above conjecture is only that.
However, what is consistent in the two surveys is that the insertion of a TIG choice seems to trigger an SNP boost to 44% or 45% which could return then to almost full-spectrum dominance at Westminster.