General election seat forecasts are no longer useful
For much of the last century, general elections in Great Britain have been largely predictable affairs. Aside from the odd Liberal, SNP and Plaid Cymru MP returned here and there, Westminster elections were a battle between Labour and the Conservatives. The relationship between the opinion polls and election results was straightforward; most constituencies were either safe Labour or Tory seats, and it was well established that a few points gained or lost in the opinion polls could predict the winner …