kebabking
Not a Girly Swot, but I like them....
How successful was Labour under previous leaders at rooting out the dodgy people?
I was a member from about 2005 to 2017, I was 'active' and knocked doors, went to meetings and did all the social stuff, but I wasn't a branch official.
They always existed, but apart from a few loons trying to get selected as candidates every few years, the party simply wasn't their main focus - they would be members of the party in the same way that I'm a member of the RSPB, a bit part of who I am, but not something I get involved in week-to-week.
A much larger group of unsavouries were known Labour voters but not members, and you'd hear their twattery when you knocked on doors at election time, but you said 'thanks' and moved on - they weren't a large group within the electorate or the Labour vote, but they were evident.
Once Corbyn stood there were three effects - firstly people joining the party who were previously 'unsavoury Labour voters', people joining who we'd never even got down a Labour voters who voiced opinions that had 'deeply unsavoury' written all over them from the start, and those who were the 'oddballs' who were already Labour members, but not engaged ones, who became a lot more outspoken about views that they previously only muttered very occasionally.
From where I sat, it was heartbreakingly simple - they saw that Labour was now a place they could feel comfortable. Before Corbyn, the party didn't have to work very hard to keep them out, or get them out, because (broadly) Labour wasn't something they wanted to join.
Other CLP's may have had different experiences...