The byelection here in Holborn and St Pancras is Labour’s to lose. But lose it might | Polly Toynbee

<p>The Greens appeal to young and progressive voters here on defence, rent controls and North Sea oil. The Burnham bounce may be about to hit an obstacle</p><p>You might think a byelection showdown between two progressive parties is unimportant when the deep struggle for the nation