caucuses

n.

（政党决定政策或推举竞选人的）核心成员( caucus的名词复数 )；决策干部；决策委员会；秘密会议

Congressional caucuses in national policy making
Turnout and Representation: Caucuses Versus Primaries
Party Caucuses and Coordination: Assessing Caucus Activity and Party Effects
Congressional Caucuses and Party Leaders in the House of Representatives
Leadership, Party Caucuses, and Committees in U. S. State Legislatures
Voting Outcomes in the 1984 Democratic Party Primaries and Caucuses
Do Endorsements Matter? Group Influence in the 1984 Democratic Caucuses
Surviving the Transformation: Social Quality in Central Asia and the Caucuses
Framing Labels and Immigration Policy Attitudes in the Iowa Caucuses: "Trying to Out-Tancredo Tancredo"
The Effects of Social Media on Political Participation and Candidate Image Evaluations in the 2012 Iowa Caucuses