The Queen should lose her automatic right to be head of state, according to a motion to be voted on at the Liberal Democrat conference.
'Time people were given a choice', LD's young members say
Under the proposal, members of the Royal Family would have to jockey for election with commoners to take the title for a fixed term.
The idea, put forward by the Liberal Democrat Youth and Students, is certain to embarrass leader Charles Kennedy who is trying to position the party as a credible alternative to the Conservatives in the run-up to the general election.
While he brushed aside any irritation at the move, claiming he was pleased to have young members taking part in democracy, Mr Kennedy said he would be taking no part in Sunday's debate or vote on the motion because he would be "in meetings".
The LDYS says a national referendum is needed on the future of the monarchy, in which the Lib Dems would be committed to campaigning for an elected head of
It also calls for the royal prerogative to be put under the scrutiny of Parliament and for the lifting of the ban on MPs debating the nature of the
UK's head of state.
"No person should be born into a position of authority over others," the motion says.
"It is time that the people of the United Kingdom were given a choice on the
future form and powers of their head of state."
But David Davis, the deputy prime minister's Tory shadow, said the proposal was "further proof that the Liberal Democrats
are not a credible party, let alone an effective opposition".
"They are truly out of touch with people of Britain who show great affection
for the monarchy," he said, adding it was "breathtaking" that the Lib Dems were shying away from the issues "that really count".
It is not the first time the Lib Dems youth wing has caused a headache for the leadership at conference.
Kennedy: 'Perfectly healthy debate'
In recent times, delegates have been asked to consider giving 16-year-olds access to hard-core pornography, the legalisation of cannabis and ending the Queen's right to be head of the Church of England.
Mr Kennedy said: "I think it is a sign of a healthy party that the youth and
students should be coming up with motions that other parties might consider in
the taboo category. It's a perfectly healthy debate to have."
If the motion is supported, it would become official party policy, although officials have indicated that this would not guarantee it a place in the election manifesto.
The war on Iraq and the detention of Britons by the United States military in Guantanamo Bay, Cuba, are likely to be among the more heated discussions at this year's conference, in Brighton.
Members will be urged to support calls for the nine detainees to be returned
to the UK for trial.
A vote will be held on a leadership plan to give responsibility for co-ordinating emergency planning to a senior Cabinet minister, like the Minister for Homeland Defence role envisaged by the Conservatives.
Members will be expected to back a motion adopting a smacking ban as party policy.
They will also be called on to support a series of policy papers on
energy, business policy, the economy and pre-manifesto for European elections in 2004.
Mr Kennedy rejected claims that he had failed to deliver the decisive
breakthrough some Lib Dems were hoping for after last year's conference at
which he forecast the biggest upheaval for 100 years in British politics, with a pledge to "quicken our pace" in the race to bypass the Conservatives.
"I've always said - before, during and since the last general
election - that the very clear strategy for this party is a steady building
process," he said.