There'll be no hard evidence of it - not since my upstairs neighbour on this page, Prof Alderman, ended his studies of the Jewish vote in British general elections - but it is widely assumed that, last week, Britain's Jews switched their allegiance from Labour to Conservative.
Just look at the Labour vote in Finchley & Golders Green or in Hendon. It is equally assumed that the explanation for that switch, under way for several years, partly comes down to the change in Labour's leadership. Put simply, while the Jews couldn't get enough of Tony Blair, they've not been so keen on Gordon Brown.
If that is so, it represents yet another unfairness in a career that has had an ample share of them. Perhaps now, as Brown prepares his exit from Downing Street, we can give the outgoing Prime Minister credit for something too often overlooked. To put it the old-fashioned way, Gordon Brown has been a great friend of the Jews.
I defy JC readers to find a more pro-Israel, a more unequivocally Zionist, statement by any serving British politician than the speech Brown gave when he became the first UK Prime Minister to address the Knesset, in July 2008. Marking the 60th anniversary of the birth of the state, Brown ditched the technocratic language and robotic delivery and waxed poetic, speaking of "the centuries of exile ended, the age-long dream realised, the ancient promise redeemed - the promise that even amidst suffering, you will find your way home to the fields and shorelines where your ancestors walked."