However, most Brits aren't registered members of the political party.

然而，大多数英国人并不是该政党的注册成员。

Yes, that's right. We've got twenty members registered with you.

是的，就是这个。我们在你们这里注册了20名会员。

Some states have opened primaries, meaning anyone can take part in the primary, even if they aren't registered party members.

一些州已经改为开放式初选，这意味着任何人都可以参加初选，即使他们不是在册党员。