The general election was not just a crushing defeat for Corbynism. It was a resounding verdict on the entire history of “Labourism”. Labourism is the name of a specific political ideology – a habit of political thought and action – that is almost unique to the British left. According to this belief, there is only one true vehicle for progressive politics, the Labour party. Trade unions have their place – to represent their members at an “industrial” level, in workplaces and on shop floors – but actual political campaigning must be delegated to the party, and the primary focus of the party must be winning elections. No other party can ever represent the working class, and any political movement that is not subservient to either unions or party is to be treated with the greatest suspicion. The naive belief in the unique political virtue of the Labour party consistently prevents it from developing creative political strategies. Decade after decade, Labour has pursued no other cour...