The worm graphic during the leaders' debate
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Leaders' debate: What did the worm's results show?

Ahead of the leaders' debate the pollsters IPSOS Mori gathered a special audience for the BBC to watch the exchanges and give their instant reactions to what was said.

The 50 undecided voters' reactions were gauged and mapped during the debate.

Reeta Chakrabarti has a look at the results.

  • 02 Apr 2015
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