EU referendum: what will the losing side do?Watch
It will be at least 40+ percent of the electorate who will have been disappointed.
So what will they do?
I think Remain (if they lose) will try to find a reason for the UK to re-join in a similar fashion to Scottish independence (finding a reason for another referendum or perhaps demanding we re-join in a crisis). They will also push for us to have as many links and agreements as possible with the EU so that we are a member in all but name.
I think Leave (if they lose) will demand a new referendum every time the EU makes a big decision. I think they will also push for rebellion and sedition in Europe by voting for UKIP in both MEP and national elections.
If remain wins though, political correctness and thought policing will become even more prevalent. The most ardent of the "leave" troop will go completely barmy and make any pragmatic view of immigration appear completely outlandish and whacky.
On the other hand, our economy might be better off if we remain.