This and a relatively low combined vote for National and Labour leaves their minor-party allies more and more likely to have a strong say in how the country is run after the October 14 election.
Act leader David Seymour threw a spanner in the works at the weekend saying that while his preference is for a strong coalition agreement with National, he is floating the idea of a confidence-only deal — something not seen in this country before.
It is a shrewd move. Anticipating being in government, Seymour wants to have as strong a hand as possible in how money is spent. Preventing spending waste is a hallmark of Act’s campaign platform.
Sitting in a confidence-only role would in theory give him a much bigger say in that aspect of government.
While it may well only be a bluff, it has been seen by some commentators as a sign that the relationship between the two right-wing parties could become strained.
As well as the high undecided vote there is the issue of New Zealand First, which in some polls is now sitting above the 5 percent level needed to get seats in Parliament.
Winston Peters has a knack for attracting publicity with things like his weekend statement that Māori are not indigenous to New Zealand, having only been here for 800 or 900 years.
Unfortunately there is an audience for this kind of barb which could lead to the Opposition being spread across four parties for the first time in the MMP era.
It is all speculation at the moment but it is making the election more and more interesting.