David Mundell is the Member of Parliament for the constituency of Dumfriesshire, Clydesdale and Tweeddale which has an electorate size of 68,330 voters. This constituency is -6.63% smaller than the average electorate size, which is 73,181. Dumfriesshire, Clydesdale and Tweeddale is in the ceremonial county of Dumfries and Galloway, Scottish Borders and South Lanarkshire, part of the Scotland region.