Neil Parpworth presents the case for fixed-term Parliaments
The Parliament Act 1911 provides that the life of a Westminster Parliament is limited to five years. In effect, therefore, in the absence of exceptional circumstances justifying an extension, there must be a general election within five years of the previous election. Thus, unlike the devolved legislatures in Scotland, Wales and Northern Ireland, the Westminster Parliament does not sit for fixed terms. A general election may be called as and when the prime minister of the day desires, provided that the monarch agrees that Parliament be dissolved using her power under the royal prerogative. The political advantage which accrues to the party in government is therefore obvious and considerable.
POWER TO DISSOLVE PARLIAMENT
Had Gordon Brown asked the Queen to grant a dissolution last month, it is certain that she would have done as she was bid. To justify an election, Brown might have argued that, as a relatively new prime minister, it was important that his government obtained its own mandate from the electorate rather than rely on that which had been won by Tony