Brexit shows (again) why we must overhaul the way the Commons is elected

David Cameron’s announcement that he would step down as Prime Minister capped a night of unprecedented referendum triumph for the ‘Brexiteers’ on the Conservative right, and for UKIP in overthrowing Britain’s 43-year-old membership of the European Union. Patrick Dunleavy considers the lessons that Cameron learned too late to save his premiership, and concludes that the only long-term cure is to structurally reform the way Parliament is elected.