British politics is in a state of chaos after Thursday’s Brexit vote. Prime Minister David Cameron has resigned, the economy is sliding towards recession, and it is fast becoming clear that there is no plan for exiting the European Union.

This might seem like an obvious time for the leading opposition, the Labour Party, to put forward an alternative. But as anyone who has followed Labour since the election of Jeremy Corbyn could have predicted, it hasn’t worked out that way. Instead the party has been plunged into a likely leadership contest — an effort led by its most right-wing members of parliament (MPs). This coup has little to do with Brexit but could be crucial in determining Britain’s political landscape in its aftermath.

Here are five reasons left-wingers need to rally to #KeepCorbyn.