Judith Collins has failed to turn around National's popularity, with the opposition party sinking to new lows in the latest Newshub-Reid Research poll.
Ardern v Collins Photo: RNZ
The survey - which is the first since Collins took over as leader - shows National slumping to 25.1 percent.
That's down from 30.6 percent in May, a result which spelled the beginning of the end for then-leader Simon Bridges.
Labour, meanwhile, has soared to nearly 60.9 percent - up 4.4 points.
With that result, it would bring a staggering 77 MPs into Parliament and be able to comfortably govern alone. National would have just 32 MPs.
Collins has recorded 14.6 percent as preferred Prime Minister, but is well behind Labour's Jacinda Ardern on 62 per cent.
In a statement, National campaign chair Gerry Brownlee denounced the poll as a "rogue" result.
"These numbers aren't even in the same ballpark as our internal polls, other public polls and the hugely positive public response to our Leader Judith Collins, including as measured by the Massey University-Stuff study," Brownlee said.
"Even with the most rigorous methodology, one in 20 polls will always be a rogue and this is clearly one of them."
The poll of 1000 people was conducted between July 16-24 and has a margin of error of 3.1 percent.
ACT has seen a jump in support to 3.3 percent, overtaking New Zealand First - which recorded just 2 percent.
The Greens would just make it back into Parliament on 5.7 percent and would get seven seats.
The poll comes after a turbulent period for the Opposition with multiple high-profile resignations and a sudden change in leader.
