So just how low can Labour’s vote share fall? Until now there has been a
solid floor which all political observers, regardless of their perspective, have
agreed upon. We all assumed it was inconceivable Labour could drop below the 29
per cent they scored in 2010. The party couldn’t be blamed for the nation’s
woes, Gordon Brown was no longer leader, the Lib Dem collapse meant Labour’s
vote share had to rise. 
It’s not inconceivable any more. After the events of the past month, any
Labour MP or activist that regards 29 per cent as the absolute bedrock of
Labour’s vote share does so at their peril.
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