More changes to electoral laws will be made before next year's election including closing a loophole which enables parties to hide donations until after election day.
Justice Minister Judith Collins also indicated she would look at bigger changes after the election, including whether police should continue to handle electoral offences.
This follows complaints that the police rarely prosecute and are slow to deal with cases.
Ms Collins this week released the Government response to recommendations for changes to electoral law after a review of the 2011 election, and said non-controversial changes which had broad support would be made in time for next year's election.
Those included ending an exemption which allowed party workers to wear party rosettes on election day - the biggest source of complaints from voters to the Electoral Commission on election day.