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Related to caucus: caucus race, Black Caucus
in U.S. politics, a gathering of delegates to nominate candidates for elective office and to formulate party policy. They are held at the national, state, and local levels.
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1. Chiefly US and Canadian
a. a closed meeting of the members of one party in a legislative chamber, etc., to coordinate policy, choose candidates, etc.
b. such a bloc of politicians
2. Chiefly US
a. a group of leading politicians of one party
b. a meeting of such a group
3. Chiefly US a local meeting of party members
4. Brit a group or faction within a larger group, esp a political party, who discuss tactics, choose candidates, etc.
5. Austral a meeting of the members of the Federal parliamentary Labor Party
6. NZ a formal meeting of all Members of Parliament belonging to one political party