Which firm/form of polling will get its closest?
Of the 2014 polls the only ones not to be carried out online are the two from ICM which has been showing a very different picture – notably UKIP has been third in each case. TNS-BMRB operates a sort of hybrid system – interviewers hand over a computer for the interviewee to fill in.
There have long been complaints from purple backers about the way the phone polls seem to mark them down. May 22nd will be a good test of whether they are right.