It seems that changed methodology was a big driver of the changes in the ComRes poll
Should the poll have been CON 32:LAB 37%:LD 11%:UKIP 13%?
It appears that part of the 4% drop in the Ukip ComRes share is down to revised methodlogy by the pollster.
— Mike Smithson (@MSmithsonPB) January 26, 2013
ComRes appears to have gone back to old formula with minor parties of only including the 100% certains.
— Mike Smithson (@MSmithsonPB) January 26, 2013
Anthony Wells reckons that without the methodology changes ComRes would have beenCON 32%, LAB 37%, LD 11%, UKIP 13% ukpollingreport.co.uk/blog/archives/…
— Mike Smithson (@MSmithsonPB) January 26, 2013