Can the UK retain its access to the single market without having to accept the free movement of people? Many Leavers believed that this was a realistic scenario. This analysis shows that expectations about the conditions of a future Brexit deal were strong predictors of the vote choice in the Brexit referendum. Using panel data from the British Election Studies, we additionally investigate how expectations have changed since the Brexit negotiations started. Our findings show that Leavers have become disillusioned over the course of the negotiations. However, these adjustments in expectations have not translated into a shift of opinion in regard to the Brexit vote itself. The implication of this analysis is that the UK electorate is divided in two quite stable, opposing camps.