It began with a whisper, and grew to a roar that drowned out all else. The Corbynmania phenomenon of the summer has swept away the Miliband-era frontbench in a spectacular left-wing wave, and so it remains for storm-tossed politicos to begin to pick up the pieces.
Moving quickly into action, a surge of new Shadow Cabinet appointments arrived to fill the space deserted by departing figures unable or unwilling to align themselves with the new leadership.
The reaction somehow becoming part of the spectacle, tabloids and bullish broadsheets alike let rip with excoriating invective and poison-penned biographies, while condemnatory voices from more staid quarters lamented what they saw as the tragic demise of credible opposition.
The Conservatives were swift to give chase, taking a surprisingly strong line with their stern warning that the Opposition now represented a national security threat.
Cavorting Corbynistas spilled their glee on social media as they took in their spectacular dominance of the result.
And dejected elements of the party’s right and centre found themselves confronted by a need to decide: sit it out or sign up to the new direction?
And at the centre of it all, a rather smarter-looking but still-familiar bearded figure found himself bombarded by paparazzi eager in their pursuit of new political celebrity as he made a Commons leadership debut opposing the Trade Union Bill before heading off for the fitting engagement of a speech before the TUC.
Tomorrow is the big day, of course – the first test. When Jeremy Corbyn steps up to the Despatch Box to take his first PMQs, he will present a picture reserved – until a few short months ago – for the wilder reaches of left-wing fantasy.
Already, rumours of a renegade approach to matters procedural like the Privy Council have been stymied as the old-time Islington rebel took his place as a Right Honourable.
And some have found cause for disgruntlement as they surveyed the appointments to the new Shadow Cabinet, expressing discontent at its demographic continuity with days gone by.
A frantic scramble to master briefs and recalibrate engagements is now underway in advance of the annual party conference, where the mood is sure to prove dramatic.
Will the radical new leadership bent find its way into the fringe meeting and the reception room as politicians carouse and kibitz? Or will unvanquished strategists find themselves crouched over strategies for subversion and eventual overthrow? We can’t wait to find out.
DeHavilland has produced an in-depth briefing on Labour’s new Leader, Jeremy Corbyn, including a detailed look at the rise of his campaign, a theme-by-theme breakdown of his policy proposals, and a look at his significant allies in the Labour Party. Download a copy online here.