This issue, together with a residual ‘Remain’ overlay, could assist the Labour Party and the Liberal Democrats in a selection of London and metropolis authorities. Of course, in areas with an enormous ‘Leave’ majority within the EU referendum, particularly within the Midlands and the North, the Conservatives may benefit from a ‘Brexit effect’. This table suggests it has been essential for the primary opposition party to guide the government party by a considerable margin, on average, between elections if it was to have a severe probability of winning the following general election (ie in 1997 and 2010). Labour’s performance on this year’s native elections will give us a powerful clue how properly it may do in a 2021 or 2022 common election.