The result of the Unison union’s general secretary election was set to be announced on Thursday of this week.
Evidence suggests union officials used their paid time to campaign for incumbent Dave Prentis. This contravenes union rules.
Unison has appointed an assistant general secretary, who supports Prentis’s campaign, to conduct an internal investigation.
Activists protested outside a meeting of Unison’s national executive committee (NEC) on Wednesday of last week demanding an independent inquiry.
But the NEC voted not to discuss the matter.
The election should be declared null and void and a new election run.