Ross and Cromarty was a county constituency of the House of Commons of the UK Parliament from 1832 to 1983.
1890 to 1918 County councils were created in Scotland in 1890, and so the constituency area became also the county council area of Ross and Cromarty, minus the Fortrose, Dingwall and Cromarty parliamentary burghs.
1918 to 1975 When reformed in 1918 the constituency covered the county of Ross and Cromarty (including the former parliamentary burghs) minus Lewis.
See also Stewart-Mackenzie resigned after being appointed as Governor Ceylon, causing a by-election.
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;