	Since the Marquess of Salisbury in 1895, all time in parliamentary service before being Prime Minister has been in the House of Commons, apart from Sir Alec Douglas-Home's period as a member of the Government while in the House of Lords (1951–63; though he was previously the elected member for Lanark, 1931-1945). After becoming Prime Minister, Douglas-Home returned to the Commons by winning a by-election on the recess death of MP Gilmour Leburn.