"I think that New Zealand First are toast fundamentally because they've just let too many people down and they are just trying the same old routine.
He also doesn't think that the Greens strong brand will be enough to return them to Government.
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Seymour says that they'd have to make history to be the first party to hit the five per cent mark after being in Parliament.
"The second problem they've got is that the Labour leader is more like a Green vote or Green MP than any other Labour leader."
Thirdly, Seymour says he is more popular than the Green co-leaders James Shaw and Marama Davidson.
"I think we might win anyway because it's a drag race between reality and fantasy," Seymour says. He believes that people will stop wanting to be safe when the economy suffers.
And the other factor Act has over the other parties?
"I've had no ruptions or difficulties in my caucus. No sex scandals either."
Also in today's interview: Seymour pondered the outcome of the euthanasia and cannabis polls being conducted in conjunction with the general election.