National Party leader Bill English is warning the incoming Government against any "experimental change" that could wrench the country off its solid economic base.
"Part of our job, as a uniquely strong, large opposition - bigger than Labour and NZ First put together - is to make sure that they run a Government that's positive for New Zealand, not one that is trying some kind of experimental change which would leave the country in worst shape than they got it," English told Radio NZ's Morning Report.
"They have created some very high expectations on the one hand, and I think a fairly confusing picture of the amount of change on the other."
English questioned New Zealand First leader Winston Peters' comments about an economic slowdown, "just when many New Zealanders have had real confidence in the economy and where it's going".
The National Party has 56 seats in Parliament, Labour has 46, NZF has 9, the Green Party has 8, and Act has 1.