Herald-DigiPoll results for March above.
• National - 48.8% (up 0.3)
• Labour - 30.9% (down 5.5)
• John Key - 65.2% (up 2.6)
• David Shearer - 12.4% (down 6.1)
Timeline of Herald DigiPoll Results 1999-2013
** The poll of 750 eligible voters was conducted between June 12 and June 23 and the poll has a margin of error of plus or minus 3.6 per cent.
Party vote results and preferred Prime Minister results are of decided voters only. On the Party Vote questions, 11.9 per cent of respondents were undecided.