The most serious tipped chief ministers out of office and the most bizarre concerned a proposal to tax X-rated videos.
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A no-confidence motion is a Parliament's way of removing a government from power.
They are particularly common in the ACT, where minority and coalition governments have been the norm since self-government was established in 1989.
The resolution to be moved by Opposition Leader Zed Seselja next week will be the 10th such motion formally proposed in the Assembly's history.
In 1989, a no-confidence motion saw the territory's first chief minister, Labor's Rosemary Follett, relegated to opposition and replaced by Liberal Trevor Kaine.
Mr Kaine faced his own moment of truth in June 1990 when Abolish Self Government MLA Dennis Stevenson moved: ''That this Assembly has no confidence in the Chief Minister of the ACT in view of his lack of integrity, lack of credibility and extreme hypocrisy as demonstrated by his intention to have the Alliance 'Government' introduce a bill to tax X-rated videos, in absolute contradiction of his statements in the House on 21 November 1989, in total condemnation of such a tax.''
The motion was defeated by five votes to 11.
Ms Follett had her revenge against Mr Kaine in 1991 when the Alliance government collapsed and she successfully moved a motion of no confidence and returned to power.
Between 1999 and 2000, Labor leader Jon Stanhope gave notice of three motions of no confidence in Liberal chief minister Kate Carnell.
One was watered down into a censure motion (or symbolic slap-on-the-wrist).
Another failed to win majority support.
The third was removed from the notice paper after Ms Carnell resigned before she could be voted out of office by the Assembly.
As chief minister, Mr Stanhope successfully fought off two no-confidence motions related to the Canberra firestorm and one on plans for a data centre and gas-fired power plant at Tuggeranong.
The support of the Greens will ensure Mr Stanhope's successor, Katy Gallagher, survives Mr Seselja's attempt to remove her from office.
Mr Seselja's next chance to try to replace Ms Gallagher will be at the October election.