TL;DR: "Polling showed the areas that had the most to lose and the least to gain from the Brexit are precisely those where the referendum saw the most support. In other words, the places — the most export-heavy regions —most hurt by the economic disruptions caused by Brexit could be the places that pushed hardest for it..."
This reminds me of a practice Ernest Hemingway supposedly used to maintain his productivity. He would purposely stop writing for the day when he was in a state of flow and knew what he would write next, so that it'd be easy to resume his progress when he came back to his desk the next day:
https://www.washingtonpost.com/news/wonk/wp/2016/06/25/why-p...
TL;DR: "Polling showed the areas that had the most to lose and the least to gain from the Brexit are precisely those where the referendum saw the most support. In other words, the places — the most export-heavy regions —most hurt by the economic disruptions caused by Brexit could be the places that pushed hardest for it..."