1530: A flurry of indignant tweets followed last week's supposed revelations that YouGov had started polling reaction to last week's prime ministerial debate before Nick Clegg had finished his closing speech. LibDem campaigner ibarhimtanguri tweeted: "Yougov have admitted calling voters during Clegg's statement. An attack on British democracy." YouGov confirmed that due to technical reasons it needed the online poll and the link to it to go live "just before the end of the debate" but no calls were made, since the poll was only conducted online. A storm in a tweet cup?