David Farrar says both can’t be right:
. . .You basically can’t reconcile these polls. One (or both) of them seem to be outside the 95% confidence interval, ie is the 1 in 20 “rogue” result.
The only other plausible explanation is that as the ONCB poll started a few days after NRR, Labour had a massive drop in support after those first few days. But the difference in dates is unlikely to explain the massive gap.
The polls ever show the direction of change differently. One has Labour down 6% and the other up 3.3%. National is up 4% in one and down 4% in another.
The NZ First result is also outside the margin of error. A 5% and a 2.8% result is outside the 95% confidence interval. . .
Both can’t be right, and just a few weeks ago all the pollsters were wrong about the Australian election.