A group that pushed for a change to MMP in the early 1990s has told MPs a spending cap must be in place for upcoming referendums seeking another potential change.
The Electoral Legislation Select Committee of Parliament has convened in Auckland to hear debate about referenda that could change the voting system.
The MMP Campaign Committee told MPs on Tuesday unlimited campaign spending can lead to scaremongering and bullying that amounts to lies.
It said campaign spending by individuals should be limited to $1000.
But Select Committee chair, National MP Amy Adams, said that limit makes it seem as if individuals would not be able to say anything at all.
The MMP Campaign Committee also wants television and radio advertising to be restricted.