The big unknown – the large number of polling respondents saying they don’t know
New @Survation Record Scotland poll
SNP 51 (+4) Lab 26 (nc) Con 14% (-2) LD 5% (+1)— Mike Smithson (@MSmithsonPB) April 27, 2015
CON edges to 1% lead in latest YouGov poll for the Sun
CON 35 (+2) LAB 34 (=) LD 9 (+1) UKIP 12 (-2) GRN 5 (=)— Mike Smithson (@MSmithsonPB) April 27, 2015