Ipsos-MORI Issues Index is unique in that those sampled are asked to name the issues without prompting. pic.twitter.com/eVkyN7LlTN

— Mike Smithson (@MSmithsonPB) February 6, 2015

Ipsos-MORI Issues Index: Where the huge jump in concern about the NHS has come from. pic.twitter.com/RDxV18G0Jl

— Mike Smithson (@MSmithsonPB) February 6, 2015

Ipsos-MORI Issus Index. How concern about NHS breaks down amongst different groups pic.twitter.com/ir0PP1pAsu

— Mike Smithson (@MSmithsonPB) February 6, 2015

This polling has been carried out in exactly the same way for 40 years and is generally regarded as the one showing which issues are most salient. The approach is unique. People are interviewed face to face and are asked to name what they think are the main issues WITHOUT ANY PROMPTING. They are first for their view of the main issue and then asked to name any others without limit.

Clearly a lot of the change reflects what’s being covered in the media.

On the face of it the NHS movement should be good for LAB because it is generally seen as and on which the party leads. This is unlike immigration and the economy – the second and third issues in the list.

Mike Smithson

For 11 years viewing politics from OUTSIDE the Westminster bubble

For latest polling and political betting news follow @MSmithsonPB