The required number had been reached in 1917. The boundary changes that followed left the Eastern district untouched, as well as the four districts in the south-west (Bulawayo District, Bulawayo North, Bulawayo South, and Western).
In 1917, the required number was fulfilled. The resulting boundary adjustments left the Eastern district and the four southwest districts (Bulawayo District, Bulawayo North, Bulawayo South, and Western) unaffected.