Parliamentary Constituencies
By the reign of James IV, the sheriffdoms were used to select Commissioners (MPs) to the Parliament of Scotland, forming the basis of the "landward constituencies", which existed distinct from the burgh constituencies until the Representation of the People Act 1918. Before the Union of 1707, Commissioners could represent multiple counties, or, on occasions, a part of one. After Union, eight counties were paired, electing a member at alternating elections to the Unreformed House of Commons. A number of sheriffdoms, such as those of Ross and Cromartyshire were also merged during the 18th century. As a result of the 1832 Reform Act the pairing system ended, and Elginshire and Nairnshire were merged into a single constituency, as were Ross and Cromartyshire and also Clackmannanshire and Kinross-shire. Bute and Caithness, previously paired, became separate constituencies.
Scotland still has county constituencies of the Parliament of the United Kingdom (Westminster), and the same term is used in reference to constituencies of the Scottish Parliament (Holyrood), created in 1999.
Historically, county constituencies did represent specific counties (minus parliamentary burghs within the counties). Now, however, county in county constituency means predominantly rural. Similarly, burgh constituencies are predominantly urban constituencies.
Read more about this topic: Shires Of Scotland