Labour last week understandably played down the loss of The Sun's endorsement. But an understandably laid back response shouldn't hide the seriousness of this loss of support.
Look at Peter Kellner's piece in the current issue of Progress. Kellner is vice president of YouGov and has analysed the difference between those voters who previously voted Labour, and who say they won't this time around, and those who have remained faithful.
Kellner, I believe, misjudges his main conclusion. He...