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
A caucus is a group of people within an organization who share similar aims and interests or who have a lot of influence.
...the Black Caucus of minority congressmen.
少数派议员中的黑人集团