Jeremy Corbyn leaves open the possibility of approving a second Scottish independence referendum

The transcript discusses the political situation in Scotland, focusing on the fragility of certain political positions and the potential for change through democratic processes. It highlights the unsustainable nature of some political stances and suggests that a significant electoral victory for the SNP could lead to substantial political shifts.

How does the speaker characterize the current political position?

What role does the SNP play in the context of the election mentioned?