A big poll for Sky News and Survation this morning. Their EU referendum poll is split down the middle with the No vote just shading it. Interestingly the majority say they won’t change their mind, 96% say they either won’t change their mind or that there is just a small chance of them changing their minds. Meaning the 5% up for grabs (2.5% margin of error) will swing it either way. What’s the betting most of them are wavering Yes voters…