https://www.fairvote.org/open_and_closed_primaries

In a closed primary, only voters registered with a given party can vote in that party's primary. States with closed primaries include party affiliation in voter ...

https://www.dictionary.com/browse/closed-primary

Closed primary definition, a direct primary in which only persons meeting tests of party membership may vote. See more.

https://ballotpedia.org/Closed_primary

A closed primary is a type of primary election in which a voter must affiliate formally with a political party in advance of the election date in order to participate in ...

https://en.wikipedia.org/wiki/Primary_elections_in_the_United_States

Primary elections in the United States are elections in which the candidates for a particular ... With respect to any major party candidate (as defined at 26 U.S.C. 9002(6)) who is unopposed for nomination within his or her own party, ... As in closed primaries, registered party members can vote only in their own party's primary.

https://definitions.uslegal.com/c/closed-primary/

Closed Primary is a primary election in which only those voters who have registered as belonging to a particular political party can vote. For example, if it is a ...

https://en.wikipedia.org/wiki/Primary_election

A primary election is the process by which voters, either the general public (open primary) or ... As in closed primaries, registered party members can vote only in their own party's primary. ..... "Closed Primary Election Law & Legal Definition".

https://www.khanacademy.org/humanities/us-government-and-civics/us-gov-political-participation/us-gov-electing-a-president/v/open-primaries-closed-primaries-and-blanket-primaries

[Presenter] Let's talk about primary elections, which are often known as primaries. One way to think about them is that they're just preliminary elections used to ...

http://www.ncsl.org/research/elections-and-campaigns/primary-types.aspx

In general, a voter seeking to vote in a closed primary must first be a ... Independent or unaffiliated voters, by definition, are ...

https://www.thoughtco.com/what-is-an-open-primary-3367495

Apr 27, 2018 ... Read a definition of an open primary and learn which states hold open primaries. Find out how an open primary differs from a closed primary.

https://votesmart.org/education/presidential-primary

There are two main types of primaries, closed or open, that determine who is eligible to vote in the primary. In a closed primary a registered voter may vote only ...