Lanarkshire (UK Parliament constituency)  Lanarkshire was a Scottish county constituency of the House of Commons of the Parliament of the United Kingdom (Westminster) from 1708 to 1868. It elected one Member of Parliament (MP) by the first past the post voting system. The British parliamentary constituency was created in 1708 following the Acts of Union, 1707 and replaced the former Parliament of Scotland shire constituency of Lanarkshire. The constituency covered the whole of the Scottish county of Lanarkshire, apart from the Lanark Burghs. The constituency elected one Member of Parliament (MP) by the first past the post system until it was abolished for the 1868 general election. In 1868 the constituency was replaced by the new constituencies of North Lanarkshire and South Lanarkshire. Lockhart's death caused a by-election.