Increasing public support for immigration

Welcome to the third of what seems to be becoming a regular series, rounding up the political opinion polling from the last week.

We've had five national voting intention polls with fieldwork in the last week, putting the Conservatives on 33-34%, Labour on 37-39%, the Lib Dems on 11-12% and the Greens on 3-7%. There are first signs of a boost for the Lib…