Peebles and Southern Midlothian was a county constituency of the House of Commons of the Parliament of the United Kingdom (Westminster) from 1918 to 1950. It elected one Member of Parliament (MP) by the first past the post voting system.

Boundaries

The Peebles and Southern Midlothian constituency was described in the Representation of the People Act 1918 as comprising: Until 1918 the area of the constituency was, at least nominally, partly within the Peebles and Selkirk constituency and partly within the Midlothian constituency. When the constituency was abolished in 1950 the Midlothian and Peeblesshire constituency was created.

Members of Parliament

Election results

Elections in the 1910s

Elections in the 1920s

Elections in the 1930s

General Election 1939–40: Another General Election was required to take place before the end of 1940. The political parties had been making preparations for an election to take place and by the Autumn of 1939, the following candidates had been selected;

Elections in the 1940s