The bill then goes through a third reading. At this stage, only amendments not of a material character may be made to the bill. The minister moving the third reading may also make a speech outlining the changes made to the bill. The bill is then put to the vote. In most cases, a simple majority of Parliament is all that is needed for the bill to be approved. However, bills seeking to amend the Constitution must be carried by a special majority: not less than two-thirds of all MPs on the second and third readings.