Is this it?
The moment when the May premiership is over?
Could Corbyn end up taking power in a matter of weeks?
It’s at least possible – though I concede it sounds far-fetched at first.
In history some British prime ministers have had their premierships wrecked by the ‘Irish Question’.
Others in more recent times have been destroyed by Europe.
Theresa May is unique in managing to combine both famously intractable and insoluble issues into one lethal cocktail.
And so it seems she is about to swallow the poison.
Her premiership may be even shorter than many anticipate and a Jeremy Corbyn-led government could be a fact of British life by the time the snows melt next year.