 Complete the following phrase:  During and after Corbyns leadership election, there was a large increase in the number of Labour Party members; from 201,293 on 6 May 2015 the day before the 2015 general election to 388,407 on 10 January 2016. Local Labour constituency offices have attributed this rise mainly to the Corbyn effect. Reflecting an increased interest among the young, university cities and towns recorded some of the biggest rises. Following Corbyns election as Leader of the Labour Party, Baths Labour Party membership increased from 300 to 1,322 and Colchesters from 200250 to 1,000. Momentum, a grassroots movement supportive of Corbyn and the Labour Party, has as of 2019 about 40,000 members. Following the 