[heero_yuy]

Originally Posted by denphone

Labour-SNP heading for majority in poll projection.

http://www.theguardian.com/politics/...ted-to-hit-326

Almost every poll leading up to polling day predicted either a hung parliament, with Labour the largest party or a small Labour majority of around 19 to 23. Polls on the last few days before the country voted predicted a very slim Labour majority.

With opinion polls at the end of the campaign showing Labour and the Conservatives neck and neck, the actual election result was a surprise to many in the media and in polling organisations. The apparent failure of the opinion polls to come close to predicting the actual result led to an inquiry by the Market Research Society. Following the election, most opinion polling companies changed their methodology in the belief that a 'Shy Tory Factor' affected the polling.

Wiki

1992.

Whether that change of methodolgy makes the polls any more reliable remains to be seen.