Claims from a Cambridge Analytica (CA) whistle-blower that the Leave campaign won by ‘cheating’ has some people calling for a second vote and others hoping the result can be overturned by Parliament. Our electoral system is under scrutiny, as new evidence shows that both remainers and leavers appear to have done what they could financially to maximise their vote. Researchers now believe it is probable that both sides were up to similar tricks. The controversy over the Brexit vote has drawn British involvement with CA to the attention of Transparency International. If Brexit campaigns end up on the wrong side of the law, pray that they will face the subsequent consequences. But, however we reached Brexit, the referendum result has three likely guarantors: the Conservative backbench, the Labour frontbench, and public opinion. See also article 4 in the World section, about CA.