At the same time political splits within the union were beginning to grow larger. The Socialist Party split in 1919, with its left wing leaving to form various communist parties that ultimately united under the name of the Communist Party USA. Those left wing socialists, joined by others with an IWW or anarchist background, challenged the undemocratic structure of the ILGWU, which gave every local an equal vote in electing its leaders, regardless of the number of workers that local represented, and the accommodations that the ILGWU leadership had made in bargaining with the employers. Left wing activists, drawing inspiration from the shop stewards movement that had swept through British labor in the preceding decade, started building up their strength at the shop floor level.