The Conservative Party swept to victory in last week's election, prompting blue grins as wide as its margin of victory.
The margin was, in fact, 7,860. This is something on which Bell Pottinger Public Affairs chairman Peter Bingle had asked people to speculate, with the promise of lunch at the rather lovely Petrus for the closest guess.
Bingle himself came within a whisker with a guess of 8,001. But he told colleagues in an email: 'I don't much fancy buying myself lunch at Petrus.'
Step foward Wayne Henderson, director of strategy at renewable energy firm Infinis, a client of Bingle's. It turns out Henderson guessed 7,864 - and romped home with the prize.
Nostradamus would have been proud.