Garff and Ayre became one seat constituencies, having previously each had two seats.
Onchan constituency was created, having been previously part of Middle constituency.
Middle constituency was created from the parishes of Marown (formerly part of Glenfaba constituency) and Braddan.
Malew and Santon constituency was created from the parishes of Malew (formerly part of Rushen constituency), and Santon (formerly part of Middle constituency).
1956 changes
Ramsey gained an extra seat to become a two seat constituency.
Unknown changes
The constituencies are not currently known that were used for the 1924, 1929, 1934, 1946, 1951, 1956, 1962, 1966, 1971, 1976, 1981 General Elections.
1892 changes
These were used for the 1903, 1908, 1913 and 1919 General Elections. The original constituencies were altered by the Redistribution Act 1893 to the following:
These were used for the 1867, 1875, and 1881 General Elections. The original constituencies under the House of Keys Election Act 1866, providing for the House to be elected for the first time, were: