A visit by the Queen to Australia - and she is making her 16th - always triggers both nostalgia and a stirring of the republican debate. With this trip expected to be her last, the former is at a peak, while support for a republic is at a 20-year low.
Queen's 16th visit stirs wave of nostalgia
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Although a republican, Gillard has acknowledged that nothing will change until after the Queen dies. The Opposition leader, Tony Abbott, is an avowed monarchist.
The Queen undertake official visits in Canberra tomorrow, take a cruise on Lake Burley Griffin and visit the annual Floriade flower festival.
During previous trips, she has toured Outback sheep farms, opened the Sydney Opera House and visited the Great Barrier Reef. Gillard said it was an honour to welcome the Royal couple back.
"Visits by the Queen are etched into the collective memory of the Australian people."
Mike Keating, chairman of the Australian Republican Movement, admitted that constitutional reform was a distant prospect. However, he added: "Hopefully, while she [the Queen] is here, people will pause to consider that we have absolutely no say in who our head of state is, and ask themselves whether a constitutional monarchy is appropriate for Australia in 2011."
Philip Benwell, convener of the Australian Monarchists League, said he detected "a feeling of excitement".
He said: "People want to catch their last glimpse of the Queen. Whilst I don't think it will be the Queen's last visit, because as long as she can travel she will want to come and meet her people, it could be her last visit to the states that she's now visiting."