Didn't the Militant have 3 MPs 20 years ago? And grassroots support too- they were able to function etc?

Wasn't the half-arsed (couple of hundred out of thousands) witch-hunt against their members, but failed to stop Militant before they decided to go for the open turn?
It was impossible to carry on working inside the labour Party at that time the witchunt
was successful hundreds were expelled me included. The Youth wing was virtually shut down and other democratic structures were removed or made useless eg party conference. It was replaced by policy forums and focus groups. Branches were moribund even then so there was no point in staying in. The political analysis and the fall of the soviet union were also significant factors.