Why pollsters ask how you voted last time?
Do Communicate Research polls overstate Labour? Yesterday’s Communicate Research poll in the Independent on Sunday suggesting that Labour is doing even better than at the 2001 General Election has provoked a lot of debate on how the pollster carries out its surveys. For ever since the firm began polling for the paper we’ve raised questions about the CR methodology which we believe overstates Labour and understates the the Tories and Lib Dems. A major challenge for telephone pollsters is finding…