I don’t think that the BRexit people are rabidly Socialist.
It does seem that some who voted for BRexit at angry at the government for stifling the change and trying to sell them out.
People can sit out elections and cause Socialists to take power.
But it isn’t like the EUSSR is a Socialist free paradise and that BRexit was a Socialist idea.
I can imagine turn out will be high for the next general election, Brexit is agitating the electorate and people know how important this election will be for the long term future of the country, not just the next 5 years.