Scottish Parliament - Members, Constituencies and Voting Systems

Members, Constituencies and Voting Systems

Elections for the Scottish Parliament were amongst the first in Britain to use a mixed member proportional representation (MMS) system. The system is a form of the additional member method of proportional representation (PR), and is better known as such in Britain. Under the system, voters are given two votes: one for a specific candidate and one for a political party.

Of the 129 MSPs, 73 are elected to represent first past the post constituencies and are known as "Constituency MSPs". Voters choose one member to represent the constituency, and the member with most votes is returned as a constituency MSP. The 73 Scottish Parliament constituencies shared the same boundaries as the UK Parliament constituencies in Scotland, prior to the 2005 reduction in the number of Scottish MPs, with the exception of Orkney and Shetland which each return their own constituency MSP. Currently, the average Scottish Parliament constituency comprises 55,000 electors. Given the geographical distribution of population in Scotland, this results in constituencies of a smaller area in the Central Lowlands, where the bulk of Scotland's population live, and much larger constituency areas in the north and west of the country, which have a low population density. The island archipelagos of Orkney, Shetland and the Western Isles comprise a much smaller number of electors, due to their dispersed population and distance from the Scottish Parliament in Edinburgh. If a Constituency MSP resigns from Parliament, this triggers a by-election in his or her constituency, where a replacement MSP is returned from one of the parties by the plurality system.

The remaining 56 MSPs, called "List MSPs", are elected by an additional members system, which seeks to make the overall results more proportional, countering any distortions in the constituency results. Seven List MSPs are elected from each of eight electoral regions, of which constituencies are sub-divisions:

• Highlands and Islands
• North East Scotland
• Mid Scotland and Fife
• West of Scotland
• Glasgow
• Central Scotland
• South of Scotland
• Lothians

Each political party draws up a list of candidates standing in each electoral region, from which the List MSPs are elected. When a List MSP resigns, the next person on the resigning MSPs' party's list takes the seat.

The total number of seats in the Parliament are allocated to parties proportionally to the number of votes received in the second vote of the ballot using the d'Hondt method. For example, to determine who is awarded the first list seat, the number of list votes cast for each party is divided by one plus the number of seats the party won in the region (at this point just constituency seats). The party with the highest quotient is awarded the seat, which is then added to its constituency seats in allocating the second seat. This is repeated iteratively until all available list seats are allocated.

As in the House of Commons, a number of qualifications apply to being an MSP. Such qualifications were introduced under the House of Commons Disqualification Act 1975 and the British Nationality Act 1981. Specifically, members must be over the age of 18 and must be a citizen of the United Kingdom, the Republic of Ireland, one of the countries in the Commonwealth of Nations, a citizen of a British overseas territory, or a European Union citizen resident in the UK. Members of the police and the armed forces are disqualified from sitting in the Scottish Parliament as elected MSPs, and similarly, civil servants and members of foreign legislatures are disqualified. An individual may not sit in the Scottish Parliament if he or she is judged to be insane under the terms of the Mental Health Act 1983.