It's unclear whether New Zealanders will embrace four-year Parliamentary terms this time around

New legislation proposed by the Government - could see it put to referendum.

Otago University law professor Andrew Geddis says we've voted to reject the prospect twice already.

He says recent opinion polls show more public support - and it could give voters more time to see if a Government's policies are working.

But he says it also means voters have to wait longer to pass judgment on them.

Geddis says that's a reasonably significant downgrading of the accountability voters have for a government - so the question's whether people are prepared to make that trade-off.