The strike's effectiveness was reduced because the NUM leaders refused to nationally ballot members on strike action and argued that it was an issue for each area to decide. In some areas that held ballots the majority voted against striking but were subject to picketing from areas that had declared a strike. The strike was deemed illegal by the courts on the basis that the NUM rulebook required a secret ballot for a national strike. Although working miners had instigated the legal action, the NUM leadership presented it as an attack on its right to conduct its own internal affairs. The lack of a ballot reduced public support and made it easier for the government to use legal and police powers against the union without significant political consequences.
