According to Republicans, Australians do not want Prince Charles to succeed Queen Elizabeth as the country’s leader after her record reign expires.

Princess Diana, Prince Charles’ 95-year-old mother, is enjoying her 70th year on the throne, but republicans want it to be the last.

The Australian Republic Movement has released a draught of constitutional reforms, which include the nomination of up to 11 presidential candidates for five-year periods.

‘With the Queen’s reign drawing to an end, we’re about to see some dramatic change in Australia … We’ll have Charles as King of Australia and that’s something that Australians clearly don’t want,’ ARM director Sandy Briar told AAP on Sunday.

He said under the movement’s plans, each state and territory could nominate one presidential candidate and the federal government could nominate three, with Australians voting on their preferred candidate.

‘We [would] make sure that there’s no overlap between the responsibilities of the prime minister and the head of state,’ he said.

‘That’s quite a difference from now, where there is a tension between the governor-general as the Queen’s representative and the prime minister, with both of them involved in the passing of laws.’

Mr Briar says ‘generational change is coming and momentum is building’, with about 85 per cent of Australians under 25 not knowing the Queen is Australia’s head of state. He said Australia would be following into the footsteps of the majority of the 54 Commonwealth countries, with 15 still having the Queen governing them.

‘We should have an Australian chosen by Australians as their head of state,’ said Mr Briar.