These figures suggest a trend diverging from a long period with support consistent around 41% after recovering from sub-40% figures before that. Sub-polls are of course unreliable due to their very small size but these 9 collectively have sampled nearly 1 300 Scots. The message is clear for Labour supporters in terms of an alternative with similar social values. For supporters of independence, the message is clear – concentrate your fire on the Tories. Some of those figures pushing 30% for them are frankly disturbing.
Note: I have not, for obvious reasons, included those polls with no Scotland data sub-set released or the Hanbury poll (5-8 April) putting the SNP at 33% because it is an extreme outlier from the clear trend for all three parties. See this for more on Hanbury: