Original sentence: Contested elections for the National Executive Committee officers have occasionally been the subject of great controversy within the NWU, which most members believe to be a good thing; but a considerable level of acrimony has inevitably developed
Edited sentence: Contested elections for the National Executive Committee officers have occasionally been the subject of great controversy within the NWU; a considerable level of acrimony has inevitably developed.Membership declined substantially after the departure of Jonathan Tasini as the NWU's president