In the second half of the 20th century, the structure of the British electorate was relatively straightforward. At its core, identifying with a party came down to your attitude to economic inequality and what (if anything) you thought the state should do about it. It’s a simplification, but not a massive one, to say that the political map was one-dimensional: left versus right, Labour versus Conservative.
But this has changed in recent decades. The EU referendum didn’t break down along left-right lines. Instead, Brexit divided the electorate into social liberals and social conservatives.
