Voters are more likely to identify as either leave or remain instead of with a political party, according to new research.
2016's EU referendum has left the country deeply polarised, resulting in people defining their politics by the way they voted on Europe more than party allegiance, Kings College London academics found.
The Policy Institute at the university found 55% of British voters aged 18-75 said they "very strongly" identify with their leave or remain Brexit affiliation - up from 44% on last year.
In contrast, just over a fifth said they very strongly identify with a political party.
Professor Bobby Duff, director of the Policy Institute, said the results showed views on Brexit are continuing to "trump" party affiliation.
Boris Johnson is hoping to harness those feelings ahead of Thursday's general election as he campaigns to take down Labour's so-called "red wall" constituencies across the Midlands and the North.
He is targeting traditional Labour supporters in leave voting seats such as Great Grimsby and West Bromwich East.
The data also found there is not much love lost between those backing a rival party.
When asked on a scale of 0-100 - with zero being cold and 100 warm - how they regard the other party, Labour supporters gave Conservatives 15 out of 100, while Tories gave Labour a score of 18.
Prof Duffy said: "These findings provide more evidence for the idea that British politics has changed dramatically in recent years.
"People's Brexit identities have got stronger and continue to trump party affiliations, while our views of people on the 'other side' of political debates have become very negative."
More than 2,000 adults took part in the survey between 27 and 29 November.
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