With three weeks of the campaign left to run, National has this election in the bag. It's now theirs to lose.
As Guyon Espiner has said about TVNZ's latest poll - which came hard on the heels of an even worse Herald Digipoll result - it's a brutal kick in the guts for Labour who must have hoped that the polls would reflect their strong start to the campaign - see: Poll is a kick in the guts for Labour.
Labour will be particularly disappointed because its campaign had suddenly taken off, and Goff and Labour were looking dynamic for a change. In terms of style and presentation, the Labour Party has probably been winning the campaign so far. Labour's election advertising in this campaign has been superior, and they've rolled out a series of policies designed to show how compassionate and prudent they are.
But Labour's policy of raising the retirement age might be a big part of the problem. John Armstrong's Voters evenly split on super age shows that nearly half of voters disapprove of the policy, including one-third of Labour's own support base.
Similarly, Danya Levy reports that the policy would make 30% of voters less likely to support Labour, while only 19% are more likely to support the party as a result - see: Goff's big calls fail to excite voters. David Farrar has also analysed Labour's polling woes in the column, Under 30pc - how did Labour drop so far?.