The 16 point Labour lead is the equivalent of a swing of 7 percent from the Conservatives to Labour which is almost exactly in line with Great Britain as a whole (a 7
point swing nationally equates to a 7 point Labour lead).
An Ipsos Mori poll of the marginals for Reuters, just out, but conducted between 30 March and 5 April, roughly translates into a 5.5 per cent
swing from Labour to Conservatives, equivalent to about an eight
point lead for the Conservatives over Labour
nationally.