 Glasgow is represented in both the House of Commons in London, and the Scottish Parliament in Holyrood, Edinburgh.At Westminster, it is represented by seven members of parliament (MPs), all elected at least once every five years to represent individual constituencies, using the first-past-the-post system of voting.In Holyrood, Glasgow is represented by sixteen MSPs, of whom nine are elected to represent individual constituencies once every four years using first-past-the-post, and seven are elected as additional regional members, by proportional representation.