Peregrina - I'd be interested in seeing that because every set of numbers I have seen has shown an increasing leave vote with age.
There is an interesting representational quandary now for many MPs: at what geographical scale are they supposed to go forward? Should those in Leave constituencies fight for Leave, and those in Remain for Remain, or should the outcome of the overall national vote be respected? The strongest narrative by far at the moment is for the latter, but in a system where election depends on a local mandate, that is going to create some interesting problems for some, especially I suspect those on the left in metropolitan areas.
I think the point about a 'downfall of democracy' is perhaps overstating it, but there is no doubt that we're in the middle of a period where traditional ideas of representational government are being questioned on both the left and the right, with both wings pointing out that the status quo is not, in fact, a 'neutral' system but one that propagates the power of a particular class. The irony is that the two movements that are most rabidly opposed to one another: momentum/far-left Labour and UKIP/Leave seem to share a desire to question the idea of middle class sovereignty, though from very different places and to very different ends.