It's a primary meaning people pick their top candidate with a vote.

这就是总统初选，意味着每人都可以投给自己心目中的第一候选人一票。

Other states have closed primaries, meaning you have to join the party in order to vote.

其他州是封闭式初选，这意味着你必须加入党派才能投票。

Some states have open primaries, meaning anyone can take part in the primary even if they aren`t registered party members.

有些州的初选是开放的，意味着所有人都可以参与，包括无党派人士。

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。

Other states have closed primaries, meaning you have to join the party in order to vote, and some states like California are experimenting with completely non-partisan primaries although not at the presidential level.

其他州的初选则不对外开放，意味着是你必须加入党派才能参与投票。有些州，例如加利福尼亚，正在尝试无党派初选，尽管那不是总统级别的选举。