In Australia, Section 4 of the Constitution allows the Queen to appoint an administrator to carry out the role of Governor-General when there is a vacancy. The Governors of the Australian states, by convention, are given dormant commissions to act as Administrator of the Commonwealth in the absence of a Governor-General. By convention, the longest-serving state Governor exercises the dormant commission, allowing an assumption of office to commence immediately whenever a vacancy occurs and as long as it exists. For example, when Peter Hollingworth stood aside as Governor-General in May 2003, Tasmanian Governor Sir Guy Green was appointed Administrator until Hollingworth's permanent replacement (Major-Gen Michael Jeffery) was appointed and sworn in. The Australian government can advise the Monarch to revoke any Governor's dormant commission. For example, the dormant commission of Sir Colin Hannah, the then Governor of Queensland, was revoked in 1975 after he made political statements which did not find favour with the government. Proposed constitutional amendments to enact a republic (voted down in 1999) made "the longest-serving State Governor available" an Acting President in the event of vacancy or incapacitation.