“Those people who don’t support the aims and values of the Labour party are not entitled to vote. We will continue the process of verification right up until the last minute,” acting leader Harriet Harman told BBC News.
There's a sign post to the future, right there.
To be fair you can see the problem they've got themselves into.
It should be for the Labour party to decide its new leader, not a bunch of people who are not in the Labour party. It's hard to have too much sympathy as they got themselves into this mess by changing the voting rules but having done so you can perhaps understand why there are a huge bunch of people they don't want voting - not because they are 'undemocratic', in the same way as it wouldn't be 'undemocratic' if Chelsea didn't want Man United supporters voting for the next manager...