The National Party "will be buoyed" by their latest shock 10 point polling lead over Labour, 1 NEWS political editor Corin Dann says - but the result also indicates an extremely "volatile" polling environment.
National registered an approval rating of 47.3 per cent compared to Labour's 37.8 per cent in last night's Newshub poll.
Dann said despite the large discrepancy between this latest Newshub poll and last week's 1 NEWS Colmar Brunton poll, there will be concerns within the Labour Party.
"No question National will be buoyed by this, they'll feel their attacks on tax, and water, and all those issues are starting to perhaps make some in-roads," Dann said.
"Labour will be worried about this and they'll perhaps have to have a bit of a rethink."
Last Thursday, September 7, the 1 NEWS Colmar Brunton poll registered Labour with a 43 per cent approval rating, giving them a four point lead over National at 39 per cent.
"This is a bit of head scratch, we've got two vastly different polls now," Dann said.
"We're clearly seeing an enormous amount of volatility in the polling to have two that are quite different like this."
The next 1 NEWS Colmar Brunton poll will be released this Thursday, September 14, on TVNZ's 1's 6pm bulletin and online at 1 NEWS NOW.