At this stage of the 2015 general election, Nicola Sturgeon was wafting around Scottish Labour seats with five digit majorities, looking winsome and posing for selfies. Yesterday, the First Minister spent long, visible hours in Lanark and Hamilton East – a seat the Nationalists have held for four years and where their candidate, Angela Crawley, is defending a meagre majority of 266.

Even worse, it is a three way marginal where all the momentum seems to be with the Scottish Conservatives. On doorstep after doorstep, as she confessed to one newspaper the other day, Crawley has been horrified by how strongly the crisp “Get Brexit done, beat Corbyn, unite the country” Boris Johnson mantra has cut through.