As we stand on the brink of polling day the overwhelming feeling seems to be one of exhaustion. It has not been a good close to an already dire campaign. It might be that much of the country is dispirited about picking between two historically unpopular party leaders. Or perhaps those who said that an election in December was a bad idea due to the dark and the cold weather were on to something. Indeed, the Conservatives cited exhaustion trying to explain why Boris Johnson came across as unempathetic when confronted with the picture of a sick child forced to lie on coats in an NHS hospital earlier this week.