 Each region elects seven additional member MSPs using an additional member system.A modified D'Hondt method, using the constituency results, is used to calculate which additional member MSPs the regions elect.The Scottish Parliament constituencies have not been coterminous with Scottish Westminster constituencies since the 2005 general election, when the 72 former Westminster constituencies were replaced with a new set of 59, generally larger, constituencies (see Scottish Parliament (Constituencies) Act 2004).