How the CON to LAB swing has been changing in the marginals
What will tomorrow’s polls show – UP or DOWN? The first number I hunt out when Lord Ashcroft publishes a new set of marginals’ polling is the average CON to LAB swing in the seats being surveyed. This gives a good pointer to the way things are going. Tomorrow the good Lord is providing us with eight more separate constituency polls with the usual 1,000 sample in each. The chart shows the movement in the swing in each wave of…