Winston Peters this week maintained his party's done nothing wrong.

The New Zealand First leader has taken to Facebook Live to answer questions about the New Zealand First Foundation.

Donations given to the New Zealand First Foundation are being investigated by the Serious Fraud Office, after the Electoral Commission referred its findings to police.

It was later revealed later that the foundation received tens of thousands of dollars in donations from the horse racing industry.

Peters dismissed the question about him stepping down at deputy prime minister if he's found to have mislead the public and received money he shouldn't have.

He says he did not receive any money nor is he part of the foundation and therefore has nothing to offer the police.

In amongst the rising scandal, a new Colmar Brunton poll suggested that the party has a difficult shot of getting back into Parliament, with NZ First picking up just three per cent. 

Political commentator David Farrar joined the Weekend Collective to discuss what impact the scandal will have on NZ First and coalition partner Labour leading into the election. 

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