Nick Clegg has announced a radical series of measures to overhaul Britain's voting system.
A referendum on the alternative vote (AV) method will take place on May 5th next year, timed to coincide with local, Scottish and Welsh elections.
The number of MPs in the Commons will be reduced from 650 to 600. Constituency sizes will be equalised so there are approximately 75,000 electors in each seat.
Rules surrounding 'no confidence' motions will be enshrined in law for the first time and a new power to dissolve parliament will be introduced which requires backing from two-thirds of the MPs in the Commons.