MMP should be ditched to prevent small players from being king-makers in post-election negotiations, lobby group Vote for Change said yesterday.
The group endorses supplementary member (SM) as a middle ground between the current mixed member proportional and the old first past the post systems.
Under SM, there would be 90 MPs elected by winning the most votes in their electorates, and 30 list MPs proportionately based on the spread of the party vote.
Single parties would be likely to govern, instead of coalition governments.
Under FPP, all MPs were electorate-based; under MMP the total number of MPs each party gets is based on the party vote.