Governing party still trails National as NZ First’s support grows, strengthening Winston Peters’ position in any rightwing coalition

Support for Labour has registered a burst of energy in a Guardian Essential poll days before the New Zealand election – but not enough to overcome an advance by the populist group New Zealand First, which is expected to propel a rightwing coalition to power.

The minor party’s steady climb in recent surveys threatens to vex what once appeared an easy route to victory for the right in Saturday’s election, after months of polls showed governing Labour languishing. Led by the maverick, veteran lawmaker Winston Peters, New Zealand First recorded 8.2% in October’s poll – which includes undecided voters in its total – up 2.2 points from September’s survey, and the party’s strongest showing of any major poll this year.

Latest survey sees support for New Zealand First exceed 5% for second month as Labour falters and National remains unchanged ahead of October election

Neither a Labour nor a National coalition could form a government without the support of populist minor party New Zealand First after the October election, according to the latest Guardian Essential political poll – which showed respondents unwilling to give either major party a commanding victory.

Since August, the governing Labour party slumped 2.5 points to 26.9% in the survey, which also recorded unsure voters – 5.3% in September – in its final result. But the results showed apathy towards both of the biggest parties, with centre-right National failing to pick up any speed from August, despite remaining ahead on 34.5%.