In support of Jane's point, I would add that the more you get to a place where you have a basket of criteria that parties have to meet, you're not making decisions based on a specific party at a specific time. The more there is public support for that suite of boxes a party needs to tick to be able to access the leaders' debate, I think the less you get into personalities and specific circumstances.
On November 23rd, 2017. See this statement in context.