The real power, such as it is, is with the Governor-General. Here the balancing act is between those who want to maintain the Westminster system of government, who have to believe that the President represents hardly any change at all, and those who want something else, who have to be convinced that the role of President is something quite important. However, the tension has crippled the Republican campaign. They need to demonstrate strong benefits in the change for people to ditch the current system, but if they are too strident, then they will lose a number of minimalists. Polls suggest that the referendum will be lost.
Polls can be, and often are, wrong.
They might even now be playing a part in which side wins. If the public believes the proposition will go down, then those who oppose the concept, given that they are drawn from the group least interested in politics, may use that as a reason for not bothering to vote. Their website is easy to navigate, informative, and most importantly, interactive. Good ideas can win through, even if they are not marketed well. If the Turnbull model's time has come, then it may carry the day, despite the factors against it.