New Zealand First leader Winston Peters is seeking to challenge the decision of the Electoral Commission not to refer complaints he laid about electioneering material during last year's General Election to the police.
In the High Court in Wellington this morning, Mr Peters' lawyer argued the commission erred in law when it declined to refer the complaints to the police.
He is asking the High Court to review the commission's decision.
Mr Peters laid two complaints with the Electoral Commission in September last year, one relating to claims made by the ACT Party and the other relating to an election pamphlet by the Conservative Party.
The hearing is continuing.