Clause IV is coming round again. To most of the electorate this means absolutely nothing but to the Labour Party it is hugely symbolic.

The original Clause IV committed the party to public ownership. Hugh Gaitskell, party leader from 1955 until his death in 1963, tried and failed to change it. Tony Blair succeeded and it summed up both his control over the party and the changing nature of the party itself.

Now it is back on agenda. Jeremy Corbyn is suggesting that a commitment to public ownership may go back in but there are other suggestions around as well.

Whether the electorate cares one way or the other is not yet clear but Clause IV could, once again, come to symbolise not just what Labour stands for but also whether it is looking internally or externally. That may interest the electorate.