Can Cameron convince public sector workers?
Ipsos-MORI Are public purse voters the bedrock of Labour support? Last July Ipsos-MORI introduced a novel new weighting to try to deal with the over-representation of Labour supporters in polling samples. Unlike the other polling firms who weight by past vote or past party ID MORI now split their samples into those who are on the public pay-roll and those who are not. Just look at the chart above to see two key elements. Conventional telephone polling seems to reach…