From Texas Standard:
A week before the United Kingdom voted whether or not to leave the European Union, it looked like those in the "Remain" camp could relax – the pundits, the press, even the betting markets were sanguine about the status quo. The polls confirmed their confidence.
But upon closer examination, in the harsh light of retrospect, the polls didn't tell the whole story. Those pointing to a Brexit win were the oddball outliers – until they proved to be correct.