Actually, I think that Ms Sturgeon is being a bit of a plonker and now doing damage. I can well understand folk south of the border being put off by hearing remarks such as "Picture me and Ed on Friday plotting our future."
It's mostly irrelevant - the battle in Scotland is not about SNP or Labour - at the last election, together they did not have enough seats to unseat Cons/Libs.....it is about what happens to the Liberal seats up there - and also down here SW of Bristol and Southampton, where its traditionally Blue/Yellow, excepting the centre of Plymouth and Exeter and a 3-way punch up over Camborne, the Tories hoping turn the area all blue and push a long way towards the 23 extra seats needed.