The Polls are trapped as everyone else is at present by the dire lack of any viable or attractive Political Parties.
The Lib/Nats are a vulgar bunch of larrikins who with their leader may attract the 'God-Awful' creationists. While the ALP, at any other time in the history of Australian Politics, would get thoroughly trounced, may stagger through.
The Greens, though they will make many gains, fouled up by supporting Abbot's Maternal leave nonsense.
My prediction is that the "Stable Population Party" and the "Australia First Party" will make ripples due to DEEP unease about Migration policies.