>> jason, watching these clips, i'm reminded that the phrase purity test was introduced tonight by mayor pete. a lot of centrist democrats find purity testing absolutely maddening. >> right. people complain about purity tests usually when they're impure. that part of the issue he has. i saw in our or five people that could be president very easy because a lot of people are qualified. but the idea of the purity test when you're talking about medicare for all, because that's one of the things that mayor pete -- it's like, look, we can't be ridiculous about this. i understand it. but every single person on that stage missed tonight, a lot of constitutional scholars where i about this, people who study supreme court talk about this. given what happened in the supreme court this week, you can't do anything about medicare for all if you don't have a plan for the courts. not one person tonight on this stage except a little bit of amy klobuchar talked about what you will have to do with the