Isle of Thanet was a county constituency which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom from 1885, until it was abolished for the February 1974 general election.

1918–1950: The Boroughs of Margate, Ramsgate, and Sandwich, the Urban District of Broadstairs and St Peters, and the Rural District of Isle of Thanet.

1950–1974: The Boroughs of Margate and Ramsgate, the Urban District of Broadstairs and St Peters, and in the Rural District of Eastry the parishes of Acol, Minster, Monkton, St Nicholas at Wade, and Sarre.

The political parties had been making preparations for an election to take place and by July 1914, the following candidates had been selected; 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;