To put the issue on the post election agenda, "ACT will ask that the issue of raising the superannuation age be put to a public vote"
"In any negotiations over Confidence and Supply with the National Party next week, we will push for a referendum to be held on the retirement age in the coming year."
Dr Brash said the question asked in such a poll could be: "'Should New Zealand match Australia's retirement age of 67 by 2023 by raising the age of eligibility six months every second year starting from 2017?"
"This referendum would take this question and its long term consequences out of today's politics and put New Zealand's fiscal destiny in the hands of New Zealanders."
Dr Brash doubted that New Zealanders, "faced with a proper debate on this subject, would choose to continue evading fiscal reality".
A referendum that found in favour or raising the superannuation age, "would give John Key a strong mandate to begin raising the age".
While a referendum would cost about $9 million, the cost of superannuation next year would be $9.5 billion or more than $1 million a hour.
"In other words, having a proper public debate about superannuation would cost less than nine hours' worth of current superannuation spending. In my opinion, that's worth every penny."