This only works when you can rely on a 'core' vote. Starmer has alienated many traditional Labour supporters, from those on the left who feel lied to, to Brexit-supporting red-wallers who, having 'lent' their votes in 2019, are unwilling to return them to a man they don't trust.I have said this before and I will try it again. Starmer and Johnson will target about 500k voters in the next election. They are the voters that will swing it one way or the other. Labour don't care what the staunch Labour voters think, they already have their vote.
Elections are won and lost in marginal seats in UK elections. Its estimated that as few as 250k votes wins our losses an election, if they are in the right seats.
It's nice to see that Labour have finally realised this. Shame lots of Labour voters haven't.