The New Zealand dollar dropped on the back of the shock result that saw Labour skyrocket to 43 per cent in the 1News Colmar Brunton poll.
Shortly after 6pm the kiwi began to fall quickly to a low for the day of US71.46c from US71.73c before the poll was released.
It later regained some territory and was trading at US71.58c around 8:45pm.
The kiwi had already started to weaken overnight after the US private payrolls rose by 237,000 in August, beating estimates of a 185,000 gain and second-quarter gross domestic product in the US rose at a revised 3 per cent annual rate against expectations of a 2.7 per cent gain.
It softened on news that business confidence dipped in August versus July and pricing intentions dropped in the monthly ANZ survey.
"The trend decline in the NZ dollar got another boost from those more interested in the inflation story than the growth story," said BNZ head of research Stephen Toplis.