Assertion: labour party's membership | /r/CapableOf | shoot up in part
Facets:
Source sentences:
text: When Corbyn became a candidate for the Labour Party leadership in 2015, and when his leadership was challenged in 2016, membership of the party shot up, in part due to a heavy reduction in membership fees, with hundreds of thousands of Corbyn’s fellow ideologues who had, like him, been confined to the margins of political discourse seeing an opportunity to seize control of the party and put their agenda center stage.