Which type of primary restricts participation to voters registered with a party to vote for that party's candidates?

• A. Open Primary
• B. Closed Primary
• C. Blanket Primary
• D. Semi-Closed Primary

Answer: (B)

The main idea is how primary elections control who can participate in selecting a party’s nominees. In a closed primary, only voters who are registered with a party can vote in that party’s primary. This keeps the nomination process within the party’s own members, preventing independents or supporters of other parties from influencing which candidate represents that party.

By contrast, an open primary allows any registered voter to participate in any party’s primary, a blanket primary puts all candidates from all parties on a single ballot, and a semi-closed primary lets unaffiliated voters participate in a party primary (while members vote in their own party). So the form that restricts participation to voters registered with a party is the closed primary.