"There is no reason why we cannot do likewise with a non-executive president in that role and frankly the time for change is well overdue."
He issued a challenge to the new Parliament: "You are in the main the millennials who will shape the future of the next generation and beyond. Seize the moment now and begin the process of wider constitutional reform by committing to our next head of state being the first president of the republic of New Zealand."
Dunne served in Parliament from 1984 to 2017 in the Labour Party and in the United Future Party supporting both Labour and National governments.
He said that throughout his time in politics he was consumed by what New Zealand might be like in the future.
"I am excited by how we can become more comparatively bicultural and at our developing multiculturalism. That is something to be embraced wholeheartedly, never feared or, worse, rejected.
"My children and grandchildren are likely to have the opportunity of living in the world's best multi-ethnic, multicultural nation where they are as at home in the world of the Pacific as they are in Asia, Europe, Africa and the Americas and where that unique blend and tolerance is what marks out our country.
"Constitutional reform will help round out that picture."