Differences of opinion
The pollsters’ results vary because they use different methods
DURING the first half of this campaign there was more disagreement among the pollsters than in any election since 1979. ICM consistently reported the lowest Labour lead (15%, on average), MORI the largest (25%), while Gallup (16%) and NOP (18%) sat between the two. There has been even greater divergence outside the established club. An American company, Rasmussen Research, has regularly put the lead lower than ICM, while a daily tracking study at Essex University has been reporting leads of over 30%.
This article appeared in the Britain section of the print edition under the headline “Differences of opinion”
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