What Are the Disadvantages of Adopting a Republican System of Government?

To answer this question specifically, we would need to know what type of republic is proposed. However, in a general sense to remove the Crown from our Constitution will be to eliminate the main safeguard against absolute control by politicians which was built into our Constitution by our Founding Fathers. The Monarch and, following appointment, the Governor-General are ‘above politics’ and are allegiant only to the people. If this were not so, how else could the people themselves have been required to vote on whether or not to retain the Crown in 1999? If Australia has an elected President, that person must be a politician for he, or she, would be required to campaign extensively in a similar manner to presidential campaigns in the United States. If a president is appointed by the Parliament, there will be extensive politicking to gain preselection. The successful candidate would also require the backing of a major political party. Our present system may not be perfect, but it is far superior to a political republic, which is what we would become.