 Complete the following phrase:  The party began with 4000 members at its founding congress. It experienced a brief surge around the 1926 general strike, doubling its membership from 5,000 to over 10,000. This surge was short-lived, however, as membership eventually sank down to 2,350 by 1930. The party reached its peak in 1942 at 56,000 members. This reflected the popularity of the party in the active phase of the Second World War. In the post-war period, the membership began declining, culminating in the sudden loss of around 6,000 members in 1957, around the aftermath of the 